HELP !! Need real time communications between one Instructor Laptop to 12 -20 student laptops (Wireless network )

Hello,
I am trying to delvelop software (Labview based) That will be installed on students laptops (12-20 max) that will read data continusly (1-10 hz max) from the instructors laptop. I am told that using a text file and have students read continuosly is not a viable option. Any help would be greatly appreiciated. I mostly write simple data aquistion type programs strain gages LVDT's etc as an engineer. I am not a full time programmer so I learn as needed. The data is simple double prescision contantly updated from a simulation.
This is going to be a freebie software for schools eventually. Please help... Thanks
Solved!
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Well, you can also use TCP instead of UDP. The TCP networking protocol provides a little more overhead to make sure packets arrive in order, and will be resent if missed. That doesn't necessarily guarantee all data will arrive. Unplug a network cable for a short period of time, and a sent packet will eventually timeout and disappear. But the internet runs on this protocol pretty well, (at least that's what I've been told ) so I'm pretty sure it will work reliably enough for your small network application.
If you need further assurances all of your data arrives, then you can serialize each pack of data yourself, put a sequential number in the transmission with the other data. If the receiving program detects a missing serial number, or one out of order, then at least you know at the level of your application and can do something about it. But I seriously doubt your application is so critical that you'd need to worry about implementing this. Just rely on TCP and you'll be fine.

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I am new to Java Real Time programming.
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Real Time Communication

HI Gurus,
Can any one tell me what is REAL TIME COMMUNICATION.
Also I request information / details on RTCIS.
Regards
Ajoy

Hi Ajoy,
1.1 Application Scenarios for Real Time Communications
There are two classes of applications: client and server. Client class applications have one real-time client per computer, such as the traditional instant messenger (IM) application. Server class applications typically act on behalf of multiple users or communicate with many hundreds of users simultaneously. Server class applications are often based around intelligent applications that interact with users. These applications can be divided into two categories: notification Apps that send information to a client and interactive Apps that accept and respond to a client. A third type of server class applications, Web-based clients, interacts with users through a Web server.
1.2 Notification Applications
Notification Apps are real-time applications that send information to multiple clients from a centralized server (see Figure 1). The one-way transmission means that clients cannot communicate directly with the notification App. Instead, clients must choose which events they wish to receive by using some other technique, such as a Web application.
One example of a notification App is an application that notifies all of the users of a particular e-mail server that the server is about to go offline. Another useful notification App would send alerts in cases of severe weather.
1.3 Interactive Apps
Interactive Apps are applications that allow multiple clients to communicate with a central server in real-time, as Figure 2 shows. They are different from notification bots in that interactive bots support two-way communications with a client. Using this approach, you can build an application that interacts with users in real-time. Within this scenario, there are two main sub-scenarios. The first provides a user with information and waits for the user to respond, such as an application that notifies users about changes in stock prices and then gives the user the option to buy or sell. The second waits for the user to request a session with the App and then responds to requests that the user supplies, such as a calendar application that allows a user to schedule meetings and other events while receiving reminders just prior to the meeting or event.
1.4 Web-Based Clients
Web-based clients provide the same basic functionality as the traditional IM client through a Web interface, thus allowing the widest possible audience to use the application, as Figure 3 illustrates. It also has the side effect of eliminating the need for a user to download local software, which reduces user concerns about the download containing a potential virus. These types of clients are useful to organizations that wish to provide a Web-based front end to their internal IM system. For example, a company might wish to use a Web-based IM client to connect customers with a support group. Doing so maximizes the number of customers that can connect with the support group.
Real Time Communications Data Flow
It's critical that organizations planning large deployments of real-time communications applications ensure that those applications can scale to meet the desired goals. The RTC Client API is very efficient for client class applications for which each client runs on its own computer. To build a scalable RTC Client API application that services multiple clients with a single computer, you need to ensure that the application is scalable when you design it.
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I hope this will be useful for you.
Thanks,
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How to Integrate real time data between 2 database servers

How to Integrate real time data between 2 database servers
May 31, 2006 2:45 AM
I have a scenario where the data base (DB2 400) is maintained by AS 400 application and my new website application based on j2ee platform access the same database also but the performance is very low. So we have thought of introducing new oracle data base which will be accessed by j2ee application and all the data from db 400 database will be replicate to oracle data base. In that scenario the only problem is of real time data exchange between 2 databases. How do we achieve that considering both the application As400 and j2ee website application are running in parallel and accessing the same information lying on DB2 400 database. We have to look at transaction management also.
Thanks
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DrClap
Posts:25,835
Registered: 4/30/99 Re: How to Integrate real time data between 2 database servers
May 31, 2006 11:16 AM (reply 1 of 2)
You certainly wouldn't use XML for this.
The process you're looking for is called "replication". Ask your database experts about it.
I predict that after you spend all the money to install Oracle and hire consultants to make it replicate the DB2/400 database, your performance problem will be worse.
panks
Posts:1
Registered: 5/31/06 Re: How to Integrate real time data between 2 database servers
May 31, 2006 11:55 PM (reply 2 of 2)
Yeajh I now that its not a XML solution.
Replication is one of the option but AS400 application which uses DB2/400 DB is highly loaded and proposed website also uses the same database for retrieval and updation purpose.All the inventory is maintained in the DB2/400 database so I have thought of introducing new oracle database which will be accessed by new website and it will have all the relevant tables structure along with data from DB2/400 application. Now whenever there is a order placement from new website then first it should update the oracle database and then this data shuold also migrate to db2/400 application at real time so that the main inventory which is lying on db2/400 should be updated on real time basis because order placement is aslo possible from As400 application. So the user from As400 application should not get the wrong data.
Is it possible to use MQ products??
-Panky

Hi,
the answer to your question is not easy. Synchronization or integration or replication data between 2 (or more) database servers is very complicated task, even though it doesn't look like.
Firstly I would recommend to create good analysis regarding data flow.
Important things are:
1) what is primary side for data creation. In other words on which side - DB2 or Oracle - are primary data (they are created here) and on which side are secondary data (just copies)
2) on which side are data changed - only in DB2 side or only on Oracle side or on both sides
3) Are there data which are changed on both side concurrently? If so how should be conflicts solved?
4) What does it mean "real time"? Is it up to 1 ms or 1s or 1 min or 1 hour?
5) What should be done when replication will not work? I mean replication crash etc.
BTW. The word "change" above means INSERT, UPDATE, DELETE commands.
Analysis should be done for every column in every table. When analysis is ready you can select the best system for your solution (Oracle replication, Sybase replication server, MQ, EJB or your proprietary solution). Without analysis it will be IMHO gunshot into the dark.

Real time Integration between Oracle i-Procurement with MUMPS based System

Folks,
Has anybody worked on integrating Oracle Applications with any Legacy System? I'm interested in discussing real time integration between Oracle i-Procurement and Legacy System. Can 9iAS Advanced Queue be used to accomplish this?
If anybody has any information on this topic please reply back or email me at [email protected]
Regards,
J Ali

Yes, we have experience with the product Oracle9iAS InterConnect. Adapters are provided to integrate with iProcurement and legacy systems. If your legacy system is non-standard either partners might already have adapters or you can use the adapter development kit to build your own specialized adapter. Check out: http://otn.oracle.com/products/integration/index.html
and I would suggest to contact your Oracle account manager to get a detailed product demonstration and references.

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I am running my first time machine backup onto a Western Digital MyBook Live. It is taking forever. Is there antivirus software running in the background or any other settings I need to change to speed it up? Also I am on a wireless network.

I am running my first time machine backup onto a Western Digital MyBook Live. It is taking forever. Is there antivirus software running in the background or any other settings I need to change to speed it up? Also I am on a wireless network.

The initial Time Machine backup can certainly take a long time over wireless. Days, possibly. It's impossible for anyone here to be able to predict how long it will take, and wireless environmental conditions can change at any time.
Is there antivirus software running in the background
Only you can determine that. If you're using third party AV software, anything is possible.
NAS devices may not be compatible with Time Machine, regardless of what their manufacturers may claim. Even after the Time Machine backup completes, your backup may be unreliable. You may not discover that until you need to rely upon the backup for some reason, and corruption can occur months or years from now.
Time Machine supports the following backup configurations:
A locally mounted volume
Time Capsule
A volume resident on a USB hard disk connected directly to a Time Capsule or current production AirPort Extreme Base Station.
That's it. Any configuration other than the above list places you in an experimental category. If your backup fails, you're on your own.

Is the maximum number of users for Airport Extreme per device, i.e. 2 AEBS = 100 users, one AEBS extending the other on the same wireless network?

Is the maximum number of users for Airport Extreme per device, i.e. 2 AEBS = 100 users, one AEBS extending the other on the same wireless network?

50 users per device, assuming that the "main" router is setup to deliver an adequate number of network IP addresses for all devices.
2 AEBS = 100 users, but that is really more of a theoretical max.
If you really need 100 connections, it would be much better to use 3 AEBS to spread things out.

Buliding real-time relationships between fields

Hello,
we're looking for a solution about building real-time realtionships in MDM 5.5. So, based on the selection in field A I would like to narrow the values in field B, which depend on field A - all this should happen "real-time".
Maybe an example will help best for this issue:
I have a table countries, which lists all the counties in Europe and another one containing the country/states relationship. So, the "simple" problem is, that, based on the selection in the "country" field, I would like to display just the states belonging to that particular country - and not all the countries/states of Europe.
I think, that MDM has to send a request to the database to update the "states" field. But this is, in my opinion, not possible during the process of data administration.
Has anybody an idea what could be a good solution for this?
Thanks for the replies,
Andreas

Andreas,
If you are trying to filter by using the Seatch pane in Data Manager, then whatever Jorge has explained works perfectly fine.
But, if you are talking about the two fields and automatic population in the drop downs based on the first field selection, then this can not be done as of now using MDM Data Manager.
If you are not refering to the above two scenarios but something else, then please let us know.
Regards,
Rajani Kumar

Help needed in Time Capsule configuration

Hello everybody,
sorry in advance for the probably dummy questions, but I have just bought a Time Capsule and would like some advice in order to obtain the best possible configuration for my needs (the configuration guide was not so clear to me).
I linked the TC via Ethernet to my modem/router (I have a Vodafone Station 2), and I have the following requirements:
1) let the TC become the primary WiFi source: what is the best way to do it? Shall I deactivate the Wi-Fi on the Vodafone Station? Shall I create a new network or extend the existing one?
2) create a guest network (possibly with another password): I can I do it? I didn't succeed in doing it...
3) I would like to use the TC internal hard disk both as a sort of reporitory for my MacBook Air backup, and at the same time as an external hard disk; can I do it directly or should I create a partition on the disk?
4) I would like to add another external HD via USB to the TC, in order to have access to its content through various devices (MacBook, iPhone, iPad, PC) linked to the WiFi network. Also in this case I couldn't get it... How should I do that?
5) Finally, I have a question: is it possible to remotely access (e.g. via 3G) the TC hard disk?
Thank you in advance for any help you can give me!!
Regards

dottorslump wrote:
Hello everybody,
sorry in advance for the probably dummy questions, but I have just bought a Time Capsule and would like some advice in order to obtain the best possible configuration for my needs (the configuration guide was not so clear to me).
I linked the TC via Ethernet to my modem/router (I have a Vodafone Station 2), and I have the following requirements:
1) let the TC become the primary WiFi source: what is the best way to do it? Shall I deactivate the Wi-Fi on the Vodafone Station? Shall I create a new network or extend the existing one?
You do not want to extend.. well actually you cannot extend a non-apple router.. so put that out.
The TC will probably have to be in bridge mode.. but it can become the primary wifi source.. simply create a wireless network. Turn off wireless in the vodafone station.
But from your other requirement of a guest network.. you cannot do that in bridge on the TC.. so why not use the vodafone station as your guest network. Give TC wireless a different name. Fix the channels. Try to have them sit a bit apart from one another.. A few Meters at least.
2) create a guest network (possibly with another password): I can I do it? I didn't succeed in doing it...
You cannot do guest network with the TC in bridge. So you need to either bridge the modem and use pppoe client in the TC.. that depends on if your ISP supports PPPoE authentication.
3) I would like to use the TC internal hard disk both as a sort of reporitory for my MacBook Air backup, and at the same time as an external hard disk; can I do it directly or should I create a partition on the disk?
This is not really a good idea.. You cannot partition a TC.. Mixing data and backups can be done but it is not necessarily going to work well. The primary design of the TC is a backup target for TM and mainly looking at laptops.
Look at Q3 here. http://pondini.org/TM/Time_Capsule.html
Pondini is our guru on all things TM.
Particularly remember any files offloaded to the TC have no backups.. And TC is not reliable enough to trust. It is a single hard disk and has no form of automated backup.. nor can TM backup a network drive. Any backup of info on the TC has to be done manually.
4) I would like to add another external HD via USB to the TC, in order to have access to its content through various devices (MacBook, iPhone, iPad, PC) linked to the WiFi network. Also in this case I couldn't get it... How should I do that?
The USB port of the TC is renowned for being underpowered even if the hard drive is powered you might need a powered hub. Some hubs work and some don't so even that is not simple.
USB drive has to be formatted Mac Extended Journelled. Or fat32.
5) Finally, I have a question: is it possible to remotely access (e.g. via 3G) the TC hard disk?
In your case the answer is probably.. but this will not be easy.
Apple's only method is BTMM via iCloud, but the TC must be the main router in the network.
That means you need to bridge your existing modem.
You might be able to get it to work via the existing modem. Please google remote access time capsule.
You will need to port forward AFP to the TC in the modem and use ddns to find the correct address unless your ISP has given you a static IP.
Sorry for the glass half empty answer.

WDS Set up - Help Needed! Airport Extreme with one Relay and one remote

Hi Guys,
I need a bit of help. I am feeling quite stupid and frustrated. I am having some difficulty with setting up a WDS network with:
Base station: Airport extreme (current version)
Relay: Airport Express (current version)
Remote: Airport Express (current version)
I start by cold resetting the three units. The Base station is connected via Ethernet. The setup I wish to get going is a simple base - relay - remote.
I go through the utility manager and set up the base station, first as "create a wireless network" enter the ISP details etc etc. Its green light. Everything is fine. Then manually configure the Base Station. Hold down option key hit Participate in a WDS. I then select main enter + and add the Mac Id's for the intended Relay unit and Remote Unit (12 character and numeric string). At this stage I am only adding the intended Relay unit and Remote units MAC number.
Question 1: Do I need to add the base unit's MAC number itself under: WDS Remotes? even I am setting it up as Main?
I am careful to note the security settings and the the Wireless Network name to match these in the relay and remote set up. Under the Wireless tab I leave the Radio Mode: as Automatic (802.11a/n - 802.11b/g/n). I make sure the base has "allow this network to be extended" ticked. Under Radio Channel selection I edit it to reference channel 1 for 2.4Ghz (5 Ghz leave as Auto). I am careful when setting up the Relay and remote to match the Radio Channel. (Although I tired many channels as I thought maybe interference was a factor and denying the fact its obviously my set up skills as a factor).
Question 2: Do you need to disable Guest networks? I would think it does not matter as I have tired turning it off and has not made any difference.
Under Access Control I leave as default, Not enabled.
Next I hit update and and error message comes up. WDS Error as it can not find other units. Ok fine as the relay and remote are not yet set up. So I ignore and can get to the stage where the base unit is working and green light with an internet connection.
I then proceed to set up the Relay unit. Doing the same steps as above with a couple of differences being I add the MAC numbers and select the WDS Mode (Relay for Relay and Remote for Remote. I add the Main base station (i.e Airpot Extreme MAC No.) when prompted and then + the Remotes MAC number. The same for the Remote except I only need to add the base station's main no.
Question 3. Do I need to add the Relay's own MAC number to its own setup? This seems doubtful as with the base station but tired with and without for good measure with no success.
The 2.4Ghz channels are all set to 1. Radio mode set to Auto. Although even when I try to manually set them to all identical it doesn't seem t help.
Then the problems begin. The base unit is Green and the Relay and Remote say they are not connected to the internet. I assume since I have not seen a WDS Error message then the units are set up correctly or as I ignored it on the base unit. But when click unignore the error seems to work itself out.
Question 4. I need help to understand why I have no internet. The remote / relay says something about no IP number and I don't really understand what I should do? Do I need to go back the Airport Utility Manager and start messing about with the TCP/IP, DHCP, NAT ? The base is set up PPPoE and the relay and remote are set to Bridge.
It is really puzzling me why the relay and remote flash amber with error messages related to the IP number? I have tried turning off the base station and router and then on again but no joy.
Can anyone please enlighten me or give me a few ideas? I am doing something very obviously stupid and I guess the fix is something simple that I have overlooked.
I did spend the time and go through the threads and search online, So I am not trying to waste anyone's time I referenced the two links to get a second opinion:
http://broadcast.oreilly.com/2009/03/taming-an-airport-express-wds.html
http://www.macobserver.com/tmo/article/settingup_an_airport_relay_with_airportexpress/
Any help much appreciated!

Versed wrote:
I need a bit of help.
Welcome to Apple's discussion groups.
My WDS experience is limited to "main" and "remote" configurations (no "relay"), so I'm not posting from direct experience, but below is what I think would work in your case.
I go through the utility manager and set up the base station, first as "create a wireless network" enter the ISP details etc etc. Its green light. Everything is fine. Then manually configure the Base Station. Hold down option key hit Participate in a WDS. I then select main enter + and add the Mac Id's for the intended Relay unit and Remote Unit
I don't think the "main" unit needs to be told about the "remote" unit, only about the "relay" unit.
Question 1: Do I need to add the base unit's MAC number itself under: WDS Remotes? even I am setting it up as Main?
You'd never enter the MAC address of a unit into its own configuration, if that's what you mean. I also don't think that you'd need to enter the MAC address of the main into the remote and conversely.
I am careful to note the security settings and the the Wireless Network name to match these in the relay and remote set up. Under the Wireless tab I leave the Radio Mode: as Automatic (802.11a/n - 802.11b/g/n).
Five things have to match in a WDS configuration: network name, encryption type, network password, band, and channel.
I make sure the base has "allow this network to be extended" ticked.
I don't think that's important for a WDS configuration.
Question 2: Do you need to disable Guest networks?
I wouldn't think that matters.
Under Access Control I leave as default, Not enabled.
That's fine.
WDS Error as it can not find other units. Ok fine as the relay and remote are not yet set up.
Right.
I then proceed to set up the Relay unit. Doing the same steps as above with a couple of differences being I add the MAC numbers and select the WDS Mode (Relay for Relay and Remote for Remote. I add the Main base station (i.e Airport Extreme MAC No.) when prompted and then + the Remotes MAC number. The same for the Remote except I only need to add the base station's main no.
I think this should be the MAC address of the relay station, not that of the main station.
Question 3. Do I need to add the Relay's own MAC number to its own setup?
No.

Help needed to debug Communication Channel using Seeburger modules

Hi ALL
Can you please, help debug the following communication channel using File adapter & seeBurger module.
Adapter Framework caught exception: I/O operation failed : java.lang.ClassNotFoundException: com.sap.engine.messaging.impl.spi.transport.PasswordCredentialImpl -
Loader Info -
ClassLoader name: [sap.com/com.sap.aii.af.app] Living status: alive Direct parent loaders: [system:Frame] [service:servlet_jsp] [service:ejb] [library:com.sap.xi.util.misc] [service:com.sap.aii.adapter.xi.svc] Resources: /usr/sap/KPX/DVEBMGS00/j2ee/cluster/apps/sap.com/com.sap.aii.af.app/EJBContainer/applicationjars/com.sap.aii.af.ejb.jar /usr/sap/KPX/DVEBMGS00/j2ee/cluster/apps/sap.com/com.sap.aii.af.app/servlet_jsp/AdapterFramework/root/WEB-INF/classes /usr/sap/KPX/DVEBMGS00/j2ee/cluster/apps/sap.com/com.sap.aii.af.app/servlet_jsp/AdapterFramework/root/WEB-INF/lib/com.sap.aii.af_api.jar -
Delivering the message to the application using connection File_http://sap.com/xi/XI/System failed, due to: com.sap.engine.interfaces.messaging.api.exception.MessagingException: com.sap.engine.services.rmi_p4.exception.P4BaseRuntimeException: I/O operation failed : java.lang.ClassNotFoundException: com.sap.engine.messaging.impl.spi.transport.PasswordCredentialImpl -
Loader Info -
ClassLoader name: [sap.com/com.sap.aii.af.app] Living status: alive Direct parent loaders: [system:Frame] [service:servlet_jsp] [service:ejb] [library:com.sap.xi.util.misc] [service:com.sap.aii.adapter.xi.svc] Resources: /usr/sap/KPX/DVEBMGS00/j2ee/cluster/apps/sap.com/com.sap.aii.af.app/EJBContainer/applicationjars/com.sap.aii.af.ejb.jar /usr/sap/KPX/DVEBMGS00/j2ee/cluster/apps/sap.com/com.sap.aii.af.app/servlet_jsp/AdapterFramework/root/WEB-INF/classes /usr/sap/KPX/DVEBMGS00/j2ee/cluster/apps/sap.com/com.sap.aii.af.app/servlet_jsp/AdapterFramework/root/WEB-INF/lib/com.sap.aii.af_api.jar
Your help is greatly appreciated!
Thank you,
Patrick

Hi Patrick,
It seems that your seeburger instalation was not successfull.
Try installing it again and make all the libraries are there.
Regards,
Luismier
Edited by: Luismier on Aug 26, 2009 10:57 PM
Edited by: Luismier on Aug 26, 2009 11:16 PM

Need help here! I'm out of options. Computer can't see the wireless network

Sorry for the novel, but I have to tell you what is going on with my computer. I also need to vent because I’m extremely frustrated. I want to make sure I give as much info as I can we can get this fixed. I’m done with trying to figure this out on my own!!!
I’m having a major issue with the wireless network connection on my desktop. I’ve tried everything and I can’t figure out what it’s doing.
First of all, my wireless router is set up correctly (according to the Sticky), has active security, and works fine. It has nothing to do with the router. I’m sure of it.
Here’s a quick history:
When I was at my first residence in Chicago and bought a Linksys wireless N router in May 2008. My computer was about 30 feet away from the router and everything worked fine. Always found the router and never lost connection.
I moved to a new place in September 2008 and used the same router, computer, etc. at my new place. The computer was only about 7 feet away from the router this time, but I used the wireless connection instead so I wouldn’t have a network cable lying across the floor. At first everything worked fine. No issues. Then, one day out of the blue, my desktop lost connection with the router. My router didn’t even appear as an Available Wireless Network. I rebooted everything and that seemed to fix it. OK, issue fixed, right? Wrong. It did it again the next day. I rebooted everything, but it still couldn’t find my router. It did see lots of other wireless routers in the area though so I know the wireless card was working. It just didn’t see my router.
This went on for a while. Sometimes it would see my router and connect then it would lose it again. I thought maybe it was the router going bad. Well, I have a notebook computer too so I tried it. It has found my router every time and has never lost connection. I had it sitting on top of my desktop even to see if there was some sort of dead spot in my condo, but the notebook found my router just fine.
Sometimes my desktop would see my router, but it wouldn’t be my network name. It would call it “Home” or something. I know it was my network because it was the only network with maximum (Excellent) signal strength. I’m thinking it must be some sort of association issue. For some reason it doesn’t associate my router as an available network. I don’t understand that.
I tried everything: Ad Aware, Live OneCare, registry cleaners, driver updates, restore points, pretty much anything I found in the forums. Nothing worked for long if at all. It’s like my desktop only finds my router when it wants to. Note: The only thing that would work sometimes was if I clicked “Repair.” Sometimes that would work. I finally gave up and connected my desktop via network cable and unhooked my wireless card. I never lost connection as long as it was hard-wired.
The drama continues. I recently moved to Iowa and set up my network here. I’m using the same router, same desktop and wireless card, same notebook computer, etc. I went ahead and tried the wireless card on my desktop again. It worked just fine! No connection issues at all. It connected and stayed connected. I thought, “Well, that’s strange. It must have been something with the condo in Chicago. Oh well!” It worked fine from February 5 until March 10. Now it’s doing it again!!!! The notebook is about 3 feet away and sees the router just fine.
Here are the facts:
I’m using a Linksys WRT300N Wireless-N router.
I’m using a Linksys Wireless-N PCI WMP300N Adapter (about 18 months old).
I’m running Windows XP on the custom built desktop and Windows Vista on the HP notebook.
I built this computer about 5 years ago and have not done any major upgrades for 2-3 years. The only thing I added was the wireless card. I also changed out the HD in January 2009 and did a data migration right before I moved to Iowa in February. All of the networking issues were going on well before I did the data migration though so it has nothing to do with that. In fact, I had my computer hard-wired into my router at the time of the data migration and the wireless worked fine (for a little while) after I moved to Iowa. So if anything, the data migration seemed to help with my wireless connection.
All drivers are up to date.
Using Windows Live OneCare and have run complete scan: nothing found.
Using Ad Aware and have run complete scan: only found cookies and deleted them but didn’t fix issue.
Ran WinsockxpFix but that didn’t help.
Ran TweakNow RegCleaner Standard but that didn’t help.
Right-clicking the wireless icon, I try to view Available Wireless Networks. The window comes up and shows me other wireless networks in the area (2 available right now), but doesn’t show my network at all. I click “Refresh network list” and 1 or 2 of the other networks will come up, but mine is still not shown.
I’ve clicked “Repair” and get this message: “Windows could not finish repairing the problem because the following action cannot be completed: Connecting to the wireless network.”
If I go to Control Panel, there is a Wireless Configuration Utility program from Broadcom. When I open that here is what I find:
It is not managing my wireless networks.
Under the “Wireless Networks” tab I see my Network with an “X” over the router icon to the left of it and a locked security icon to the right of it.
No information under the “Link Status” or “Statistics” tabs.
The “Site Monitor” tab shows my wireless network and the other 2 networks in the area (although they drop in and out because of signal strength). My network is always present even though the signal strength bounces up and down. This tab shows that my network is secure, 802.11 is g and n, speed is 270 mbps, Channel is 9, and Signal bounces from orange/red to green. Data encryption is (m)TKIP, TKIP, WPA-PSK.
I was going to use my notebook to post this message since it has been connected for 2 days without ever losing connection. It shows Very Good signal strength and is about 3 feet away from my desktop.
Update: My desktop just connected to my network after sitting there for 2 hours. Good to Very Good signal. Broadcom tool shows the connection and now has information in the Link Status and Statistics tabs.
Cancel that. It just lost connection again. It was only connected for about 5 minutes. There is no change in signal strength according to Broadcom though. In fact, Broadcom shows better signal now that I lost connection.
Now, it just connected again (on its own) after sitting there for 10 minutes! I’ve been surfing the web on my desktop for 45 minutes now and I’m using my desktop to post this message. What the heck?!!! This is what it’s like. Aggravating huh?
Well, that’s all I can think to write. What else do you need? Can anybody help me with this?
I’m confused. Please help!
Thanks a lot!!!
Jake
Message Edited by JakeT on 03-12-2009 02:54 PM

Thanks but it's just my desktop that doesn't see it though. My notebook sees it everytime, even at the same exact time that my desktop doesn't see it. For example yesterday when I was typing up this post, I was typing up the post on my notebook because my desktop didn't see the router. I don't think it has anything to do with the router actually, but I wanted to see if anyone on here has encountered this issue before. Other forums have similar issues but I've tried all of the fixes I found elsewhere and they didn't work.
Any other ideas?
Thanks!

HT202663 each time I go to mail it asks me to join a wireless network. I choose the one I have and dont know why I dont stay connected. I took my mac book pro to vermont and joined the network at my house there, when I got back to ny I joined here but it

my mac book pro would connect automatically to my wireless network in ny. then I went to vermont with my computer and connected to my wireless network there. when I got back to ny I changed it back to my wireless connection here but it wont stay connected. each time i go on mail it asks me to join a network. it hink i did all the right steps but it wont stay joined.

Back up all data before making any changes.
Step 1
Take all the applicable steps in this support article.
Step 2
If you're running OS X 10.8.4 or later, run Wireless Diagnostics and take the remedial steps suggested in the summary that appears, if any. The program also generates a large file of information about your system, which would be used by Apple Engineering in case of a support incident. Don't post the contents here.
Step 3
If you're not using a wireless keyboard or trackpad, disable Bluetooth by selecting Turn Bluetooth Off from the menu with the Bluetooth icon. If you don't have that menu, open the Bluetooth preference pane in System Preferences and check the box marked Show Bluetooth in menu bar. Test. Continue if you find that Wi-Fi is faster with Bluetooth disabled.
From that same menu, select Open Bluetooth Preferences. If the box labeled Discoverable is checked, uncheck it. Click the Advanced button, and in the sheet that opens, uncheck the top three boxes, if any are checked. Click OK. Enable Bluetooth and test again.
If the application called "Bluetooth Setup Assistant" is running, quit it.
Step 4
This step will erase all your settings in the Network preference pane. Make a note of them before you begin, and recreate them afterwards. It may be helpful to take screenshots of the preference pane.
Triple-click the line below on this page to select it:
/Library/Preferences/SystemConfiguration
Right-click or control-click the highlighted line and select
Services ▹ Reveal
from the contextual menu.* A folder should open with an item named "SystemConfiguration" selected. Move the selected item to the Trash. You may be prompted for your administrator password.
*If you don't see the contextual menu item, copy the selected text to the Clipboard by pressing the key combination command-C. In the Finder, select
Go ▹ Go to Folder...
from the menu bar, paste into the box that opens (command-V). You won't see what you pasted because a line break is included. Press return.
Step 5
Reset the System Management Controller.
Step 6
Make a "Genius" appointment at an Apple Store, or go to another authorized service center.
Back up all data on the internal drive(s) before you hand over your computer to anyone. There are ways to back up a computer that isn't fully functional — ask if you need guidance.
If privacy is a concern, erase the data partition(s) with the option to write zeros* (do this only if you have at least two complete, independent backups, and you know how to restore to an empty drive from any of them.) Don’t erase the recovery partition, if present.
Keeping your confidential data secure during hardware repair
*An SSD doesn't need to be zeroed.

Apple Airport Express and PC Laptops - Wireless Network Help

Hello all,
I have two Wi-Fi enabled laptops running Windows XP, an Apple Airport Express unit and a Netgear DG-632 Modem/Router.
At present the DG-632 is running in modem mode and is connected to one laptop using the ethernet connection. The Netgear DG-632 Modem/Router has one ethernet connection and one USB connection.
My understanding is that if i run one laptop off the USB connection on the Modem/Router and connect the the DG-632 to the ethernet connection then the laptop on USB has to be turned on for the second laptop to access the wireless network.
Assuming the above is true (i am very likely wrong), it would be nice if both laptops were able to access the internet wirelessly via the Airpot Express Unit.
However, being a complete novice at networking, i am little confused about how to do this?
Any help, tutorials or advice would be greatly appreciated.
Thanks in advance.

I'm new. I have a Dell Laptop XP and my wife has a
dell desktop XP . I have DSL with a Linksys wireless
router. After many hours on the phone I was able to
get the ineternet set up for me and my wife.
After all this I found that my Airport Express system
couldn't connect to my stereo. It seems that the
router wireless connection pays no attention to
Airport. Apple says that they could set up another
wireless system to work for Itunes by using my
wireless card in the Laptop.
But... I can't listen to the music and surf the net
at the same time. A linksys person has tried to allow
Linksys to accept and proper installation to the
router. I tried is but it didn't work.
Dell Laptop Windows
XP Wireless card and Linksys
router
Dell
Laptop Windows XP Wireless card and
Linksys router
Sort of new here and to the AE, but have a Dell Desktop and Tosbiba laptop both running XPHome SP2, and on dialup
The Linksys router is hooked to the desktop with an ethernet cable. In the office.
The AE is in the living room and works great for surfing and ITunes.
The only way I could get my AE to work as an access point for dialup and stream ITunes from the laptop to the home theater was to use the setup found here.
http://rgbdream.com/?p=44
The only problem I had with the setup was do not use the $ when entering the password. And had to use a proxy server on the desktop for sharing the dialup. LOL no hope of any broadband here.
Hope this is some help.
Bob

HELP !! Need real time communications between one Instructor Laptop to 12 -20 student laptops (Wireless network )

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