Imac loses connection

My Imac loses the wireless connection all the time. Problem has been getting worse last couple of weeks. We have no problems with the other laptops, they seem to stay connected fine(apple). Thanks

I have a17inch intel imac that has the exact same issue.... Loads a web page fine, open a link and the net dies... have to turn off airport and turn it back on and it is fine..... some nights, it is literally every other page..... really annoying when trying to get updates or downloading in general otherwise..... Running snow leopard and it is still by far the best computer in the house, bar none even a gaming laptop my wife bought 2 months ago.... please if anyone figures this issue out, let us all know the answer.....

Similar Messages

AirPort in Intel iMac loses connection and does not see network

I bought an Intel iMac in the summer of '06. I had no problems connecting my airport card to my house wireless network which uses an AirPort Extreme Base Station.
In september I brought my iMac to college and used an AirPort Express as my base station. I had no problems other than that the computer did not automatically reconnect to the network upon start up.
In december I returned home and configured the AirPort Express (located on the main level of the house) to extend the network of the AirPort Extreme (located upstair in the bedroom next to my iMac).
Lately the iMac loses connectivity to the wireless network randomly while the computer is on, even in the middle of using it. Not only does it lose the signal but does not list my network when i click the airport signal icon on the top bar of the screen. Once in a while it will have it listed but will give me an error when trying to connect. The only way I have of fixing the problem is to restart the computer.
I know the airport base station works fine and the network is still there becasue I have a PowerBook G4 that I will put right next to the iMac and the PowerBook will still be connected to the network.
Can someone help?

I have a very similar problem. My machine's airport connection has always been a little flaky, but it's always gone on working. However, yesterday I turned on WEP 128 bit encription. It now connects for a few minutes and then I see the signal strength gradually die until it goes off completely. There are then two ways to get it back working: 1. close the lid, then open it again; 2. tun off the airport, then turn it on again. When I do that the signal strength suddenly comes on full after about 3 seconds. The G4 iMac I have doesn't suffer from this problem. I am using a netgear access port as the base station.
Macbook Pro Mac OS X (10.4.8)

My iMac loses connection to my AirPort several times a day.

My iMac loses connection to my AirPort several times a day, and I have to manually select the AirPort each time. My other devices (laptops, iPads, iPhone) never lose connectivity to the AirPort - just the iMac. What is going on? It is just inconvenient to take the extra steps to reconnect my Wi-Fi every time I want to use my iMac.

Make sure your system is up to date with all available Software Updates since this problem was supposed to have been fixed some months ago, but I understand it remains for some users.
Assuming everything is up to date, try this: Using the Finder's Go > Go to Folder... menu, open the following folder
/Library/Preferences/SystemConfiguration
Drag these three files to the Desktop:
com.apple.airport.preferences.plist
com.apple.network.identification.plist
preferences.plist
This will only make copies of them. If they still exist in the folder, select each of them and then drag them to the Trash. You will need to authenticate with your Administrator name and password.
Restart your Mac and log in again. Your wireless network will not be selected automatically, so select it from the Wi-Fi menu. The three Preference files above will be replaced with new ones.
Use the Mac and determine if this made any difference. If you think it's fixed, you can drag the three files from the Desktop to the Trash. If not, you can always drag them back to the original folder. You will have to authenticate again, and your previous network preferences will be restored.

IMacs lose connection to windows server

We have recently moved over to macs in the office, so previously we had 3 PC's all connected to a WD Sentinel server where we access large files between us rather than keeping information on the computer.
We have slowly been moving over to iMacs but the problem is these lose connection to the server, so for example if we are transferring large image files, they will just stop, or if accessing catelogs on Lightroom that are stored on the server, we have to 'find missing folders'. This can happen every hour. The connection is also overall slower (for example loading previews/thumbnails) compared to the PC's, which arent even spec'd as high as the iMacs. It also has nothing to do with it going to sleep, it can happen in the middle of working.
All iMacs are connected via ethernet as the PC's were. The WD is meant to be compatible with macs and pc's, which is why we bought it.
Ideally I want to avoid having to splash out money on a Time Capsule and connect them all via thunderbolt, but wanted to check if this is my only option?

I would guess the user's Windows account is corrupted. Since Error -36 is a read/write error, it could occur if the user's server account record is damaged. Since you can use this Mac to logon to other accounts, the Mac is probably fine. Since other Macs can still logon, the Windows server 2003 is fine. This points toward a corrupted account.
I've experienced this phenomenon with Windows accounts and Windows PCs.
A test would be to logon to this user's account from another machine on the network, either Mac or PC. Failure from another machine would point to corruption of that account on the Windows 2003 server. If corrupt, it will need to be deleted and re-created. Backup any server data for this account, since deleting the account will destroy any server data for this account.

Power surge makes my iMac lose connection

I am a long time user of Mac products and this one has me so baffled. My iMac is set up with an either cord daisy chained to the Time Capsle then to the DSL modem. A wind storm came through and the power started to flicker on/off. I turned my iMac off and unplugged it from the wall. After the storm, we have lost connection to my internet on the iMac. I have turned everything (iMAC, Time Capsle & DSL) off - wait 5 minutes - back on. In the preferences panel, it shows that the either net with a green light. When I go to Safari, I get the page that says Network Diagnostic. I follow the prompts and it shows eithernet (red light - failed), network settings (yellow light), ISP (red light - failed), Internet (red light - failed), and server (red light - failed). When this happened last summer it made me think we had a bad eithernet port. As a last resort, I did a complete reinstall of the entire system software and viola it was fixed! Now the question: how can a fix this without reinstalling the system software? Is there some corrupt preference I should be looking for? OR can I do a patch? Anything?

did that before I came to this discussion group.
I'm wondering can I trash a networking preference or an ethernet preference or somekind of preference trashing to wipe port finding capability clean?
I know I could do the system reinstall and it would work fine but I really hate doing that. I always lose something important...like a movie.
Thanks for your interest, btw.

Imac lose connection with aiport extreme

however my powerbook pro( wireless) and a pc connected by ethernet to airport extreme do not
The Imac is wireless and next to AE . If I reset it it gets a connection for a while but loses it after going to sleep
Can anbody help
Thanks in advance
Mike

qch1, Welcome to the discussion area!
Curious... if your iMac is next to the AirPort Extreme base station (AEBS), why is it not connected via Ethernet to the AEBS?

My iMac loses connection to the keyboard/mouse while installing Windows 7 on Bootcamp

I have used bootcamp assistant to install windows 7 on my brand new iMac. I used a flash stick to install the Windows OS.
When I rebooted the system, the iMac gave me an error message that it couldn't find a bootable disk and it asked for a bootable disk to be connected and to press any key. I did press a key, but it did not respond. I found later that both my usb keyboard and usb mouse don't have power.
I manually restarted and used pressed the option key to select the flash stick as my bootable device. It loaded and started to boot and load windows to the point it presented me with a screen to select the language etc. They key board and mouse seesed to work. I couldnt type nor move the mouse.
I tried again using the Bluetooth keyboard and mouse but I got the same problem.
Is my iMac broken? Or did I do something wrong.
I have installed the latest version of mavericks and installed all the updates.
Please help.
Thanks.
Tareq

I called the local seller who sold me the iMac regarding this problem. He confirmed that they had many problems with the latest iMac (Late 2013) Windows 7 installation and recommended that I install Windows 8 instead.
I am not excited about Windows 8 as I need to buy a new license and get used to a new interface.
I downloaded a fresh copy of Windows 8 (without a license of course) just to test that. I repeated the who process. I am glad to report that I was able to get past the first screen to select language and local setting and was able to use the mouse and keyboard. I stopped on the second screen where it prompted me to enter the license number.
My concern is that I go and buy a Windows 8 license to find that it will not install as well. Any suggestions?
Why Can't I install Windows 7 on this iMac (latest 2013)? Has anyone else face the same problem? is there any solution?
Any ideas?
Tareg

IMac loses connection to network when waking from sleep

Hi There,
We are a small mixed environment of Macs and PCs running on a Windows 2008 domain. One of 2 iMacs that now run Mountain Lion 10.8.5 is having problems when waking from sleep. One of our designers will go for lunch and the machine will sleep for about 30 to 40 minutes. Upon her return the iMac will kick her off of the 3 shares she usually logs into (2 are on Win2008 machines, and 1 is a MacPro running 10.6.8 Server).
If she has files open in any of the Creative Suite Apps, the app will crash and she will have to restart the whole machine. If no files are open then she can usually reconnect to the shares after a short while. Obviously I told her not to leave any files open, but its causing her some headaches.
Its also creating srv errors (id 2012) on our domain controllers, when she tries to wake her machine.
This Imac is a late 2009, and we have a 2011 model that has no issues at all. Both are set exactly the same.
I have reset SMC, Pram, and rebinded to the domain, and searched through these forums quite a bit to no avail.
Any thoughts or suggestions would be much appreciated.

I am continuing to work on this issue, and have tried a number of things based on searching here and elsewhere.
And Lucky Me, I have been able to replicate this behavior on one of other Macs (imac 2011, on 10.8.5). I also see errors on 2 separate Windows file servers on the domain (Event ID: srv 2012).
Below I am posting what seems to be the relevant area of the log.
Nov 14 11:48:04 PrePressMac2 kernel[0]: Wake reason: EHC1
Nov 14 11:48:04 PrePressMac2 kernel[0]: Previous Sleep Cause: 5
Nov 14 11:48:04 PrePressMac2 kernel[0]: The USB device HubDevice (Port 1 of Hub at 0xfd000000) may have caused a wake by issuing a remote wakeup (2)
Nov 14 11:48:04 PrePressMac2 kernel[0]: 18323.795216: setDISASSOC from ATH_INTERFACE_CLASS disconnectVap
Nov 14 11:48:04 PrePressMac2 kernel[0]: 18323.795224: switchVap from 1 to 1
Nov 14 11:48:04 PrePressMac2 kernel[0]: The USB device Keyboard Hub (Port 3 of Hub at 0xfd100000) may have caused a wake by issuing a remote wakeup (3)
Nov 14 11:48:04 PrePressMac2 kernel[0]: The USB device Apple Keyboard (Port 2 of Hub at 0xfd130000) may have caused a wake by issuing a remote wakeup (3)
Nov 14 11:48:04 PrePressMac2 kernel[0]: HID tickle 117 ms
Nov 14 11:48:04 PrePressMac2 kernel[0]: TBT W (1): 0 [x]
Nov 14 11:48:04 PrePressMac2.local WindowServer[90]: handle_will_sleep_auth_and_shield_windows: no action for lock state 1
Nov 14 11:48:04 PrePressMac2.local WindowServer[90]: Created shield window 0x1e1 for display 0x003f003d
Nov 14 11:48:04 PrePressMac2.local WindowServer[90]: handle_will_sleep_auth_and_shield_windows: no action for lock state 1
Nov 14 11:48:04 PrePressMac2.local WindowServer[90]: Created shield window 0x1e2 for display 0x003f003e
Nov 14 11:48:04 PrePressMac2.local WindowServer[90]: handle_will_sleep_auth_and_shield_windows: no action for lock state 1
Nov 14 11:48:04 PrePressMac2.local WindowServer[90]: Created shield window 0x1e3 for display 0x003f003f
Nov 14 11:48:04 PrePressMac2.local WindowServer[90]: handle_will_sleep_auth_and_shield_windows: no action for lock state 1
Nov 14 11:48:04 PrePressMac2.local WindowServer[90]: Created shield window 0x1e4 for display 0x003f0040
Nov 14 11:48:04 PrePressMac2.local WindowServer[90]: handle_will_sleep_auth_and_shield_windows: no action for lock state 1
Nov 14 11:48:05 PrePressMac2 kernel[0]: AppleBCM5701::selectMedium - autoselect, any duplex, EEE allowed, flow control allowed
Nov 14 11:48:05 PrePressMac2 kernel[0]: Ethernet [AppleBCM5701Ethernet]: Link down on en0
Nov 14 11:48:06 PrePressMac2.local KernelEventAgent[47]: tid 00000000 received event(s) VQ_NOTRESP (1)
Nov 14 11:48:06 PrePressMac2.local KernelEventAgent[47]: tid 00000000 type 'smbfs', mounted on '/Volumes/PrePress', from '//aconti@GAIA/PrePress', not responding
Nov 14 11:48:06 PrePressMac2.local KernelEventAgent[47]: tid 00000000 found 1 filesystem(s) with problem(s)
Nov 14 11:48:10 PrePressMac2 kernel[0]: Ethernet [AppleBCM5701Ethernet]: Link up on en0, 1-Gigabit, Full-duplex, Symmetric flow-control, Debug [796d,0321,0de1,0300,c5e1,7800]
Nov 14 11:48:12 PrePressMac2.local configd[19]: network changed: v4(en0+:192.168.1.184) DNS+ Proxy+ SMB+
Nov 14 11:48:12 PrePressMac2.local SophosAntiVirus[67]: reloading scheduled scans...
Nov 14 11:48:12 prepressmac2.cutpasteandprint.net configd[19]: setting hostname to "prepressmac2.cutpasteandprint.net"
Nov 14 11:48:12 prepressmac2.cutpasteandprint.net digest-service[1048]: label: default
Nov 14 11:48:12 prepressmac2.cutpasteandprint.net digest-service[1048]:           dbname: od:/Local/Default
Nov 14 11:48:12 prepressmac2.cutpasteandprint.net digest-service[1048]:           mkey_file: /var/db/krb5kdc/m-key
Nov 14 11:48:12 prepressmac2.cutpasteandprint.net digest-service[1048]:           acl_file: /var/db/krb5kdc/kadmind.acl
Nov 14 11:48:12 prepressmac2.cutpasteandprint.net digest-service[1048]: digest-request: uid=0
Nov 14 11:48:12 prepressmac2.cutpasteandprint.net rpcsvchost[1049]: sandbox_init: com.apple.msrpc.netlogon.sb succeeded
Nov 14 11:48:12 prepressmac2.cutpasteandprint.net digest-service[1048]: digest-request: init request
Nov 14 11:48:12 prepressmac2.cutpasteandprint.net digest-service[1048]: digest-request: init return domain: CPP server: PREPRESSMAC2
Nov 14 11:48:12 prepressmac2 kernel[0]: Sandbox: sandboxd(1050) deny mach-lookup com.apple.coresymbolicationd
Nov 14 11:48:12 prepressmac2.cutpasteandprint.net sandboxd[1050] ([1049]): rpcsvchost(1049) deny file-read-data /private/var/root/Library/Preferences/ByHost/.GlobalPreferences.037506C4-0B10-5 70D-A7B6-B3B8F7AE0CC6.plist
Nov 14 11:48:12 prepressmac2.cutpasteandprint.net sandboxd[1050] ([1049]): rpcsvchost(1049) deny file-read-data /private/var/root/Library/Preferences/.GlobalPreferences.plist
Nov 14 11:48:13 prepressmac2.cutpasteandprint.net nsupdate[1055]: krb5_sendto_context is called on main thread, its a blocking api
Nov 14 11:48:13 prepressmac2.cutpasteandprint.net nsupdate[1055]: gss_init_sec_context is called on main thread, its a blocking api
Nov 14 11:48:13 prepressmac2.cutpasteandprint.net nsupdate[1056]: gss_init_sec_context is called on main thread, its a blocking api
Nov 14 11:48:14 prepressmac2.cutpasteandprint.net nsupdate[1057]: krb5_sendto_context is called on main thread, its a blocking api
Nov 14 11:48:14 prepressmac2.cutpasteandprint.net nsupdate[1057]: gss_init_sec_context is called on main thread, its a blocking api
Nov 14 11:48:14 prepressmac2.cutpasteandprint.net nsupdate[1058]: gss_init_sec_context is called on main thread, its a blocking api
Nov 14 11:48:15 prepressmac2.cutpasteandprint.net nsupdate[1060]: krb5_sendto_context is called on main thread, its a blocking api
Nov 14 11:48:15 prepressmac2.cutpasteandprint.net nsupdate[1060]: gss_init_sec_context is called on main thread, its a blocking api
Nov 14 11:48:16 prepressmac2.cutpasteandprint.net nsupdate[1061]: gss_init_sec_context is called on main thread, its a blocking api
Nov 14 11:48:17 prepressmac2 com.apple.launchd[1] (com.apple.smb.preferences): Throttling respawn: Will start in 5 seconds
Nov 14 11:48:17 --- last message repeated 2 times ---
Nov 14 11:48:17 prepressmac2.cutpasteandprint.net nsupdate[1063]: krb5_sendto_context is called on main thread, its a blocking api
Nov 14 11:48:17 prepressmac2.cutpasteandprint.net nsupdate[1063]: gss_init_sec_context is called on main thread, its a blocking api
Nov 14 11:48:18 prepressmac2.cutpasteandprint.net nsupdate[1067]: gss_init_sec_context is called on main thread, its a blocking api
Nov 14 11:48:18 prepressmac2.cutpasteandprint.net netbiosd[92]: name servers down?
Nov 14 11:48:19 prepressmac2.cutpasteandprint.net nsupdate[1068]: krb5_sendto_context is called on main thread, its a blocking api
Nov 14 11:48:19 prepressmac2.cutpasteandprint.net nsupdate[1068]: gss_init_sec_context is called on main thread, its a blocking api
Nov 14 11:48:19 prepressmac2.cutpasteandprint.net nsupdate[1069]: gss_init_sec_context is called on main thread, its a blocking api
Nov 14 11:48:22 prepressmac2.cutpasteandprint.net digest-service[1048]: digest-request: uid=0
Nov 14 11:48:22 prepressmac2.cutpasteandprint.net digest-service[1048]: digest-request: init request
Nov 14 11:48:22 prepressmac2.cutpasteandprint.net digest-service[1048]: digest-request: init return domain: CPP server: PREPRESSMAC2
Nov 14 11:48:22 prepressmac2.cutpasteandprint.net KernelEventAgent[47]: tid 00000000 received event(s) VQ_NOTRESP (1)
Nov 14 11:48:22 prepressmac2 kernel[0]: smb_iod_reconnect: Reconnected share PREPRESS with server GAIA
Nov 14 11:48:32 prepressmac2.cutpasteandprint.net ManagedClient[1077]: ODUGetMCXRecordWithCache(): record unique ID for 'PrePressMac2' not set
Nov 14 11:48:32 prepressmac2.cutpasteandprint.net ManagedClient[1077]: ODUGetMCXRecordWithCache() Accessing network user record from Active Directory not allowed because no authentication information was supplied.
Nov 14 11:56:25 prepressmac2 com.apple.launchd.peruser.1997381720[389] ([0x0-0x4a04a].com.adobe.InDesign[630]): Exited: Terminated: 15
Nov 14 11:56:34 prepressmac2.cutpasteandprint.net spindump[1100]: Saved hang report for Adobe InDesign CS5.5 version 7.5.3.333 (7530) to /Library/Logs/DiagnosticReports/Adobe InDesign CS5.5_2013-11-14-115634_PrePressMac2.hang
This is from the 2011 iMac, and I see something very similar to this on the 2009 machine.
I continue to think this is a software issue related to 10.8.5 and Adobe CS (CS5 on the 2009 machine and CS 5.5 on the 2011) as this appears to have come up only since the recent update.
Any help would be appreciated.

IMac loses wireless network connection intermittently - Linksys wrt54g v.5

I' ve setup a new 17" iMac for my folks, runs great with this big exception - it will spontaneously, but regularly lose connectivity with my Linksys WRT54G v.5 router (usually after sleep, but not always - and sometimes when starting cold). Restarting the iMac, fidgeting with internet connect, etc. will not fix the problem. ONLY power cycling the Linksys router will allow the iMac to once again see the network. Once the router is recycled, the network reappears with its strong signal indicator in the menubar (the iMac is maybe 20 feet from the router). When connected, network performance and quality are at expected levels (ie, no slow d/l speeds etc.).
To make it interesting, I also have a PC running XPsp2, that experiences NO network hiccups when the iMac loses connectivity. And the iMac does this whether or not the PC is on, etc. But if I turn the PC on when the iMac cannot connect, the PC has no problem joining the network or accessing resources.
In otherwords, I sense a problem between the Linksys router and the iMac (either the Airport card or OS X).
I HAVE upgraded the Linksys firmware, upgraded all Apple software, changed router channels, and tried both WEP and WPA Personal, all to the same result. I have also scoured every corner of Apple and Linksys boards, only to find many people with this same issue and no answers.
Brownie points for answers!
17" Intel iMac Mac OS X (10.4.7)
17" Intel iMac Mac OS X (10.4.7)
17" Intel iMac Mac OS X (10.4.7) Linksys WRT54g ver.5

Well, so far so good!
I would never have found the preferences, so thank you thank you thank you for that Sherry. I never did delete ALL the prefs, just the ones obviously labeled as network related. But so far, no dropouts for 2.5 days. If Apple has anything up detailing this procedure, I sure couldn't find it - so you saved me there. I thought we left all the "delete prefs" solutions behind with OS 9.
BUT, I was a bad boy and actually made two changes at once. Not recommended procedure, I know, but I was desperate. In addition to deleting/recreating the above prefs, I also changed the router from Channel 1 to Channel 11. Maybe the Airport card likes Chan. 11 in this application? Dunno if this was part of the solution, but worhwhile info for anyone else in the same situation.
Thanks again Sherry, I've marked "helpful" and "solved" accordingly.
17" Intel iMac Mac OS X (10.4.7) Homebrew Athlon XP 2800+, Winders XP sp2

I have an iMac (Mid 2010) and am running 0sx 10.8.5 and the WiFi always loses connection during sleep mode. I have seen numerous different solutions none of which seem to work. Can anyone help?

I have an iMac (Mid 2010) and am running 0sx 10.8.5 and the WiFi always loses connection during sleep mode. I have seen numerous different solutions none of which seem to work. Can anyone help?

Test after taking each of the following steps that you haven't already tried. Back up all data before making any changes.
1. Make sure the network is on the preferred list by following these instructions. It's important to read the article carefully, as it's the starting point for any further efforts to solve the problem. If you skip any of the steps, the problem may not be solved. Make sure the box marked
          Remember networks this computer has joined
is checked.
2. Follow the instructions in this support article under the heading
          Symptom: After restarting or waking from sleep, my computer might not connect to the Internet
3. Reset the PRAM.
4. Make a note of all your settings for Wi-Fi in the Network preference pane, then delete the connection from the connection list and recreate it with the same settings. You do this by clicking the plus-sign icon below the connection list, and selecting Wi-Fi as the interface in the sheet that opens. Select Join other network from the Network Name menu, then select your network. Enter the password when prompted and save it in the keychain.
5. From the Location menu at the top of the Network preference pane, select Edit Locations. A sheet will drop down. Click the plus-sign button to create a new location. Give it any name you want. In the new location, set up the Wi-Fi service with the same settings you used before. Click Apply and test.
6. Launch the Keychain Access application. Search for and delete all AirPort network password items that refer to the network. Make a note of the password first.
7. Repair permissions on the startup volume.
8. Turn off Bluetooth and test.
9. Reset the System Management Controller.
10. This step shouldn't be necessary, but has been advised by Apple Support in some cases, apparently as a workaround for a bug. Open the Energy Saver pane in System Preferences. If applicable, click the padlock icon in the lower left corner to unlock the settings. Enter your administrator login password when prompted.
Select the Power Adapter tab and uncheck the boxes marked
          Wake for Wi-Fi network access
and
          Enable Power Nap...
if present. Then, if the computer is a MacBook, select the Battery tab and uncheck
          Enable Power Nap...
11. Reinstall OS X.

My brand new iMac loses its WiFi connection when it goes to sleep, does anyone have a proven fix?.

I have a MacBook that is about 4 years old and a brand new iMac both are running the most up to date version of Lion. My old MacBook has no issues; however, my iMac loses its WiFi connection every time it goes to sleep. There are some discussions about this already out there but does anyone have a proven fix. This is very frustrating.

I was having the same problem for a long time. I tried everything but nothing seemed to make it stay connected. It was very frustrating. I just got a new Airport Extreme.....bang!.....all better. Problem gone.

My imac loses wifi connection when it goes to sleep, how to correct?

My iMac loses wif connection when it goes to sleep. How do I correct?

Are you running OS X Lion? If so there are unfortunately numerous threads on here discussing exactly the same problem. So far there doesn't seem to be a definitive solution, with everyone hoping that Apple will come up with a permanent fix.
Here's a quick search of these forums alone - depressing reading:
https://discussions.apple.com/community/desktop_computers/search.jspa?peopleEnab led=true&userID=&containerType=&container=&spotlight=true&q=Massive%20wifi%20pro blem%20with%20Lion
This 'fix' has worked for a few people but, unfortunately, not everyone:
http://osxdaily.com/2011/11/06/lion-wi-fi-problems-solution-mac/?utm_source=feed burner&utm_medium=feed&utm_campaign=Feed%3A+osxdaily+%28OS+X+Daily%29&utm_conten t=FaceBook

My iMac loses its wireless connection repeatedly

My iMac loses it's wireless connection repeatedly. The only solution seems to be deleteing the wireless network from the Network Preferences, and then deleting the network password from Keychain. But I have to do this five or six times nightly. Help!

Softwre Update would bring you up to 10.7.4 and there have been updates involving WiFi. Also here are some links to potential fixes:
Troubleshooting wi-fi issues
https://discussions.apple.com/docs/DOC-3421
WiFi update 10.7.3
http://support.apple.com/kb/DL1501
Apple DNS Servers:
208.67.222.222
208.67.220.220
Wireless Improvements
Move the Base Station If interference is particularly bad in one part of your house or office, move the base station to another location. But this can be tricky if your AirPort base station has to connect to the broadband feed coming into the house and that feed happens to enter at a particularly interference-prone spot.
Use the 5GHz Band Compared with the 2.4GHz band, the 5GHz band is practically empty. The newest AirPort Extreme Base Station is one of the few Wi-Fi base stations designed for home use that work in that 5GHz band. All of Apple’s Core 2 Duo laptops and iMacs (except the discontinued 17-inch 1.87GHz model) can also use the 5GHz band; with the build-to-order wireless option, so can the Mac Pro.
To switch to the 5GHz band, launch AirPort Utility, select your base station, and switch to Manual Setup. Click on the AirPort button and select the Wireless tab. Select 802.11n Only (5 GHz) from the Radio Mode pop-up menu. Click on the Wireless Options button and select Use Wide Channels. Click on Update to restart the base station.
Currently, no Mac-compatible adapters enable you to use the 5GHz band in older Macs or with older versions of OS X.
These Firmware updates may or may not apply to your system, but may help with your particular problem.
http://support.apple.com/kb/index?page=search&src=support_site.home.search&local e=en_US&q=keyboard%20firmware%20update

I am have trouble with 2 new 21.5" iMacs losing wifi connection from my network. I have 4 other vintage iMacs that never lose connection. Please help.

I am have trouble with 2 new 21.5" iMacs losing wifi connection from my network. I have 4 other vintage iMacs that never lose connection. Please help.

This subject has been talked/written about a lot, after Lion was introduced. A solution from Apple has not yet been published, everybody is waiting.
Try for instance https://discussions.apple.com/thread/3734081?start=15&tstart=0, but there are more discussion groups with the same subject: frequently lost WiFi-connections in newer Macs running Lion or up.

EMac 10.4.11 connected to iMac 10.6.6 via ethernet loses connection?

My iMac is connected wirelessly to my router and my old eMac is connected to my iMac with an ethernet cable, though I rarely use the eMac on the internet.
Both yesterday and today when I tried to access the internet on my eMac, there was no connection.
I looked in the iMac's System Preferences>Sharing and saw that the "Internet Sharing" option was still selected.
After a bit of puzzling I switched the Internet Sharing off and back on again.
On both occasions the internet connection was restored immediately.
Any ideas why the connection could be getting lost?
I don't want to open my iMac's System Preferences every time I use my eMac for web surfing.

This question was answered in another thread. The solution is here:
http://discussions.apple.com/thread.jspa?messageID=12694507
Thank you Julie.

Imac loses connection

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