My 851W only allows a single wireless connection at a time

1st device associates fine. 2nd device gets message - You are either out or range of credentials incorrect. If I shut down the wireless adapter in the 1st device the 2nd immediately associates.   Re-enable adapter in 1st device and now it cannot associate, same out of range or credentials message
Here's the full config
#sh run
Building configuration...
Current configuration : 7426 bytes
version 12.4
no service pad
service tcp-keepalives-in
service tcp-keepalives-out
service timestamps debug datetime msec localtime show-timezone
service timestamps log datetime msec localtime show-timezone
service password-encryption
service sequence-numbers
hostname saa01.panjde.nj
boot-start-marker
boot system flash
boot-end-marker
logging buffered 51200
logging console informational
enable secret 5 <omittted>
no aaa new-model
clock timezone EST -5
clock summer-time EDT recurring
no ip source-route
no ip dhcp use vrf connected
ip dhcp excluded-address 10.10.10.1
ip dhcp excluded-address 10.10.10.25 10.10.10.254
ip dhcp pool sdm-pool1
   import all
   network 10.10.10.0 255.255.255.224
    default-router 10.10.10.1
ip cef
ip inspect name DEFAULT100 cuseeme
ip inspect name DEFAULT100 ftp
ip inspect name DEFAULT100 h323
ip inspect name DEFAULT100 icmp
ip inspect name DEFAULT100 rcmd
ip inspect name DEFAULT100 realaudio
ip inspect name DEFAULT100 rtsp
ip inspect name DEFAULT100 esmtp
ip inspect name DEFAULT100 sqlnet
ip inspect name DEFAULT100 streamworks
ip inspect name DEFAULT100 tftp
ip inspect name DEFAULT100 tcp
ip inspect name DEFAULT100 udp
ip inspect name DEFAULT100 vdolive
ip tcp synwait-time 10
no ip bootp server
ip ssh time-out 60
ip ssh authentication-retries 2
crypto pki trustpoint TP-self-signed-1218768189
enrollment selfsigned
subject-name cn=IOS-Self-Signed-Certificate-1218768189
revocation-check none
rsakeypair TP-self-signed-1218768189
crypto pki certificate chain TP-self-signed-1218768189
certificate self-signed 01
   30820253 308201BC A0030201 02020101 300D0609 2A864886 F70D0101 04050030
   31312F30 2D060355 04031326 494F532D 53656C66 2D536967 6E65642D 43657274
   69666963 6174652D 31323138 37363831 3839301E 170D3032 30333031 30313339
   34345A17 0D323030 31303130 30303030 305A3031 312F302D 06035504 03132649
   4F532D53 656C662D 5369676E 65642D43 65727469 66696361 74652D31 32313837
   36383138 3930819F 300D0609 2A864886 F70D0101 01050003 818D0030 81890281
   8100C851 20F52411 0EB54BDE 2A94E59E A8519700 78365D20 8A601CA9 4F39FE76
   32D6132E 4818EDDD CEF23693 54DB319D E044B994 FCEE3E88 567D5F44 39973E1B
   6A7CFFC9 352A199D 5BB97CE6 B8515877 02A3AD40 B585B7A7 AE459BB4 F628BAA1
   E25BA349 26E529F6 20906E4C 42DE148B 334A440B ED8E18EB 10F87715 FD562047
   45670203 010001A3 7B307930 0F060355 1D130101 FF040530 030101FF 30260603
   551D1104 1F301D82 1B736161 30312E70 616E6A64 652E6E6A 2E636F6D 63617374
   2E6E6574 301F0603 551D2304 18301680 14AF142A 26B99015 4E52B7CB CEDA485E
   7800D40C 9B301D06 03551D0E 04160414 AF142A26 B990154E 52B7CBCE DA485E78
   00D40C9B 300D0609 2A864886 F70D0101 04050003 818100C5 2DDDB22D 5D98BC9D
   73426486 C9DF6AEA 463D31D9 7656D7EA E8213739 B3EC68B0 0E308062 91D379BC
   5A2CEB4E 439B3678 EBC23F0E 570C0989 5904EF65 72A2A4D6 B1D8AE25 D9E38AEB
   C15A3BAB 39BE35CB DE2D9524 16B74998 C67F3943 0DDEBF51 1A476AF0 8896B10E
   15DE45B1 194B2B6F E736FADA 6550B219 451F63BF F3CAAE
   quit
bridge irb
interface Loopback0
ip address 10.0.0.1 255.255.255.252
interface FastEthernet0
interface FastEthernet1
interface FastEthernet2
interface FastEthernet3
interface FastEthernet4
description $FW_OUTSIDE$$ES_WAN$
ip address dhcp client-id FastEthernet4
no ip redirects
no ip unreachables
no ip proxy-arp
ip inspect DEFAULT100 out
ip nat outside
ip virtual-reassembly
ip route-cache flow
duplex auto
speed auto
interface Dot11Radio0
no ip address
encryption mode ciphers tkip
ssid <omitted>
    authentication open
     authentication key-management wpa
    wpa-psk ascii 7 <omitted>
speed basic-1.0 basic-2.0 basic-5.5 6.0 9.0 basic-11.0 12.0 18.0 24.0 36.0 48.0 54.0
station-role root
no cdp enable
bridge-group 1
bridge-group 1 subscriber-loop-control
bridge-group 1 spanning-disabled
bridge-group 1 block-unknown-source
no bridge-group 1 source-learning
no bridge-group 1 unicast-flooding
interface Vlan1
description $ETH-SW-LAUNCH$$INTF-INFO-HWIC 4ESW$$FW_INSIDE$
no ip address
ip tcp adjust-mss 1452
bridge-group 1
interface BVI1
description $ES_LAN$$FW_INSIDE$
ip address 10.10.10.1 255.255.255.224
no ip redirects
no ip unreachables
no ip proxy-arp
ip nat inside
ip virtual-reassembly
ip route-cache flow
ip tcp adjust-mss 1412
ip http server
ip http authentication local
ip http secure-server
ip http timeout-policy idle 60 life 86400 requests 10000
ip nat inside source list 1 interface FastEthernet4 overload
logging trap debugging
access-list 1 remark INSIDE_IF=BVI1
access-list 1 remark SDM_ACL Category=2
access-list 1 permit 10.10.10.0 0.0.0.31
access-list 2 permit 68.86.0.0 0.1.255.255
access-list 2 permit 10.10.10.0 0.0.0.31
access-list 2 deny   any
access-list 2 remark for VTY access
access-list 20 permit 63.241.192.58
access-list 100 permit ip 10.10.10.0 0.0.0.31 any
access-list 100 deny   ip any any
access-list 101 remark input ACL for Outside - CM facing - Interface
access-list 101 permit udp any eq bootps any eq bootpc
access-list 101 permit udp any any eq ntp
access-list 101 permit ip 68.86.0.0 0.1.255.255 any
access-list 101 permit icmp any any echo-reply
access-list 101 permit icmp any any time-exceeded
access-list 101 permit icmp any any unreachable
access-list 101 deny   ip 10.0.0.0 0.255.255.255 any
access-list 101 deny   ip 172.16.0.0 0.15.255.255 any
access-list 101 deny   ip 192.168.0.0 0.0.255.255 any
access-list 101 deny   ip 127.0.0.0 0.255.255.255 any
access-list 101 deny   ip host 255.255.255.255 any
access-list 101 deny   ip any any
control-plane
bridge 1 protocol ieee
bridge 1 route ip
banner login ^C********************************************************************************
                                 WARNING
        This system is solely for the use of authorized   and
contractors.   reserves the right at any time to monitor usage of this
system to ensure compliance with this policy, all applicable   policies
that apply to electronic communications, and all applicable laws. Your use of
this system constitutes your acceptance of and agreement to all applicable
electronic communications policies, your consent to monitoring by
,and your express agreement to use this system in compliance with all
applicable laws. Any unauthorized use of or access to this system may result
in a revocation of your user privileges, other disciplinary action up to and
including termination of employment or contract, or referrals to law
enforcement officials including the provision evidence of any unauthorized use
or access to law enforcement.
********************************************************************************^C
line con 0
login local
no modem enable
transport output telnet
line aux 0
login local
transport output telnet
line vty 0 4
access-class 2 in
login local
transport input telnet ssh
scheduler max-task-time 5000
scheduler allocate 4000 1000
scheduler interval 500
sntp server 68.87.96.5
sntp server 152.10.1.186
end

The router connects directly to a cable modem.
The issue is not DHCP, it is that the clients cannot associate with the router AP. Until is associates it will of course not sent a DHCP discover. Only a single laptop can associate at a time. As soon as the 1st laptop is powered down, the 2nd laptop can associate. Turn the 1st laptop back on and it cannot associate until the 2nd is powered down. There is not even a log message that the 2nd laptop is trying to associate
1st laptop associates and then is powered off:
000220: Oct 19 20:26:40.912 EDT: %DOT11-6-ASSOC: Interface Dot11Radio0, Station 0026.b6ea.3a3e Associated SSID[c0mcastNET0] AUTH_TYPE[OPEN] KEY_MGMT[WPA PSK]
000225: Oct 19 20:33:29.491 EDT: %DOT11-6-DISASSOC: Interface Dot11Radio0, Deauthenticating Station 0026.b6ea.3a3e Reason: Disassociated because sending station is leaving (or has left) BSS SSID[c0mcastNET0]
Almost Immediately 2nd laptop associates
000226: Oct 19 20:33:31.912 EDT: %DOT11-6-ASSOC: Interface Dot11Radio0, Station 0026.b6ea.3bee Associated SSID[c0mcastNET0] AUTH_TYPE[OPEN] KEY_MGMT[WPA PSK]

Similar Messages

The airport on my Time Capsule will now only allow one device to connect at a time.

When I first installed my new time capsule, everything worked beautifully. I had multiple devices connected to the AirPort and life was good.
A few weeks ago, I swapped my cable modem and everything went bad from there. Now I can only connect one device wirelessly at a time.
After lots of back and forth with Time Warner, a swap of the modem and may hours with tech support, it has been determined that my Time capsule is not assigning the 2nd, 3rd... devices a proper IP address. Instead, the IP addresses all begin with 169.
What advice do you have. Is there a way to reset the whole darn thing? At this point, I am okay if I lose all of my backups.
Thanks!

What is the cable modem?? Make and model please.
What model is your TC.. A1xxx from the base please??
I suspect the issue is the TC is bridged and you have a pure modem.. you need to change it over to router mode..
Here is what you need to do to setup the TC..
The list is over long perhaps but is based on best network practice for Yosemite which is rather more than problematic.
You don't say what OS you are running.
Once you do this.. you also need to power down the modem if it is pure modem type (which is all that makes sense here). Leave it off for 20min while you do the setup of the TC and then power up the modem wait a couple of min and power up the TC..
Expect serious issues if the modem is SB something.. 6121 or 6141 for example. And your TC is AC model.
Start from a factory reset. No files are lost on the hard disk doing this.
Factory reset universal
Power off the TC.. ie pull the power cord or power off at the wall.. wait 10sec.. hold in the reset button.. be gentle.. power on again still holding in reset.. and keep holding it in for another 10sec. You may need some help as it is hard to both hold in reset and apply power. It will show success by rapidly blinking the front led. Release the reset.. and wait a couple of min for the TC to reset and come back with factory settings. If the front LED doesn’t blink rapidly you missed it and simply try again. The reset is fairly fragile in these.. press it so you feel it just click and no more.. I have seen people bend the lever or even break it. I use a toothpick as tool.
N.B. None of your files on the hard disk of the TC are deleted.. this simply clears out the router settings of the TC.
Setup the TC again.
Then redo the setup from the computer with Yosemite.
1. Use very short names.. NOT APPLE RECOMMENDED names. No spaces and pure alphanumerics.
eg TCgen5 for basestation and and TCwifi wireless name.
If the issue is wireless use TC24ghz and TC5ghz with fixed channels as this also seems to help stop the nonsense. But this can be tried in the second round. ie plan on a first and second round of changes to fix this.. hopefully.. I will point out other steps that can be round2.
2. Use all passwords that also comply with 1. but can be a bit longer. ie 8-20 characters mixed case and numbers.. no non-alphanumerics.
3. If the TC is main router you can skip this point. This is only an issue when the TC is bridged.
Ensure the TC always takes the same IP address.. you will need to do this on the main router using dhcp reservation.. or a bit more complex setup using static IP in the TC. But this is important.. having IP drift all over the place when Yosemite cannot remember its own name for 5 min after a reboot makes for poor networking.
4. Check your share name on the computer is not changing.. make sure it also complies with the above.. short no spaces and pure alphanumeric.. but this change will mess up your TM backup.. so be prepared to do a new full backup. Sorry.. keep this one for second round if you want to avoid a new backup.
5. Mount the TC disk in the computer manually.
In Finder, Go, Connect to server from the top menu,
Type in SMB://192.168.0.254 (or whatever the TC ip is which you have now made static. As a router by default it is 10.0.1.1 and I encourage people to stick with that unless you know what you are doing).
You can use name.. SMB://TCgen5.local where you replace TCgen5 with your TC name.. local is the default domain of the TC and doesn't change.
However names are not so easy as IP address.. nor as reliable. At least not in Yosemite they aren't. The domain can also be an issue if you are not plugged or wireless directly to the TC.
6. Make sure IPv6 is set to link-local only in the computer. For example wireless open the network preferences, wireless and advanced / TCP/IP.. and fix the IPv6. to link-local only. Do the same for ethernet if you use it.
There is a lot more jiggery pokery you can try but the above is a good start.. if you find it still unreliable.. don't be surprised.
You might need to do some more work on the computer itself. eg Reset the PRAM.. has helped some people. Clean install of the OS is also helpful if you upgrade installed.
Tell us how you go.
Someone posted a solution.. See this thread.
Macbook can't find Time Capsule anymore
Start from the bottom and work up.. I have a list of good network practice changes but I have avoided Yosemites bug heaven.
Yosemite has serious DNS bug in the networking application.. here is the lets say more arcane method of fixing it by doing a network transplant from mavericks.
http://arstechnica.com/apple/2015/01/why-dns-in-os-x-10-10-is-broken-and-what-yo u-can-do-to-fix-it/

New AirPort Express, but only 1 device can be connected at a time

I recently switched out a Linksys router for an AirPort Express, and now I am only able to connect 1 of my devices (MacBook, iPad, iPod Touch, Tivo) to the internet at any given time. I'm not sure if this is an AirPort or ISP (Earthlink DSL) issue, but with the Linksys, I was always able to have multiple devices on my home network at once.
With each of my Apple devices, I have to open Safari and obtain a connection by entering my DSL password. Specifically, the Earthlink ASDL Modem page says, "The Internet connection is currently in use by another computer (lists the IP address). Enter your DSL Account logon password to switch the Internet connection to this computer."
After I do this, Earthlink gives me the option of 'Releasing the Connection' so other computers can access the internet without entering the logon password...whether I do or don't, it doesn't change the fact only 1 of my devices can be online at once.
Did I configure my AirPort incorrectly or is there a setting that I need to change to fix this issue? Thanks!

Welcome to the discussions, kaytoem!
This sounds like you may have the AirPort Express set up in "bridge mode", which would only allow one device to connect at time.
Open AirPort Utility - Click Manual Setup
Click the Internet icon
Look for the Connection Sharing setting
This should be set to Share a public IP address
Update to save any changes
Does that help?

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Unable to check mark whole playlists to play since last update. ONly allows me to check one at a time. How do I fix?

While in MY MUSIC on itunes, all my music is unchecked. I can not check whole playlists by using the top checkmark to select all. I went to all my playlists, same thing. I can only press them ONE at a time, which will take about a day to check all of them.
any ideas? anyone have same problem? This just happened since last update.

I exactly have the same problem as this "Unable to check mark whole playlists to play since last update. ONly allows me to check one at a time. How do I fix?" I have a windows7. Please help.

Time Capsule will only allow Apple products to connect to internet, PC ad PS3 shows excellent signal from TC but won't allow connection.

I have a Mac, iPad, iPhone and several iPod touch devices that can connect to the internet through Time Capsule without a problem. There are times when my work PC and PS3 won't connect to the internet through TC. There doesn't seem to be any reason why this happens and it just started happening in the last month. The PC indicates an excellent wireless connection. If you have any suggestions please put it in very easy to understand terms (I'm not a very technical person).

Ok.. that is very helpful. What OS is your Mac running?
Please now take a few screenshots of your airport utility so I can see the setup of the TC.
But it looks like it is bridged.
Open the utility and click on manual setup.
Take a screenshot of the summary page.
Take a screenshot of the internet tab.
And the other two tabs there.. TCP/IP
And DHCP
Yours will look different to mine.. but there is nothing in them that is needing to be hidden.. it is useless info to another person. I post mine to show it is useless in case it worries you.
I do need some more info.
What is the modem you have? Is it also a wifi router. In the list of wireless you took the snapshots of, you have several wireless names.. I want to know which of those are yours??
The WEP security device is a problem. It is old and near useless.. if you don't own it that is fine.. but if it is yours get rid of it.
Can your PC and PS3 connect to the internet via some other wireless?
It looks like you might be able to simply bypass the TC to connect the PC.
Sometimes it is easier to solve this problem by using different hardware.. and a secondary wireless AP can easily be plugged into a modem router if that is what you have to provide wireless just for your PC devices.
What model is your TC.. ?
Please look at the bottom rubber mat.. there is a number in the top line of the rubber molding.. It will say A1254 or A1302 or A1355 .. those are the numbers for Gen1 , 2 and 3. Gen4 it is on the paper label.. where it always should have been A1409. Please tell me that number.

WRT320N & IBM T42 laptop keeps dropping wireless connection at key times

I have an IBM T42 laptop whihc keeps dropping the wireless connection at what seems to be the same time windows each day.
I have my cable modem connected to my WRT320N.
My wireless it set up as follows :
Manual configuration
Wireless Band = 2.4Ghz (Think it needs to be this for the T42 wireless).
Network Mode = Mixed
Channel Width = 20Mhz only
Channel = 2
It seems to be that at approx 8pm each night when using the latop downstairs, the wireless connection will drop and then fail to reconnect for a period of time. I reboot the laptop and it will then begin to work again. The wireless connection does seem to keep trying to connect but it cannot maintain the connection to the router.
Any ideas?

Well I've pretty much given up trying to get this router to work so have spoken to the supplier I bought it off who said it's now discontinued by Linksys - all support is through them now. Took it up with them went through all the steps I've done to try and troubleshoot it (helps to be an IBM engineer as I logically follow procedures through).
I've RMA''d the router and hope it's replacement works better. I've just unbricked my old WRT54GS to make do whilst I wait for a replacement - back down to 100mb traffic - I'll miss my gigabit switch for a while!

Wireless connection drops after time. Please assist.

Hi
My problem is that my wireless connection drops every 5-15 minutes.
I don't know all the relevant info to give. If there's something I can post that will help let me know and I'll reply.
I've used netcfg to configure my network. I have a Canyon CN-WF511 wireless card.
I load the following 3 modules in my rc.conf; rt2500pci rt2x00lib rt2x00pci. I think those are the only ones pertaining to my network card.
When it drops I just netcfg -a then netcfg default (profile name) and it works for another few minutes.
Below is my network profile.
CONNECTION="wireless"
INTERFACE=wlan0
#IP="dhcp"
#DHCP_TIMEOUT=20
IP="static"
IFOPTS="192.168.0.2 netmask 255.255.255.0 broadcast 192.168.0.255"
GATEWAY=192.168.0.1
#DOMAIN=localdomain
#DNS1=192.168.0.1
ESSID=default
SECURITY=none
SCAN="YES"
TIMEOUT=15

The easiest solution might be to setup NetCfg somehow with your wifi card and access point. Have you tried that? Can you find your card's chipset on the wiki?(chances are that your particular chipset will need a firmware put into /lib/firmware. Again that's found on the wiki on the NetCfg or Wifi page, I forget which sorry.) Those are two places where I'd look for good information.
By the way, your rc.conf is way out of date. You should look at updating it by using the recent rc.conf.pacnew file that you'll find in the /etc directory.

Printer drops wireless connection after some time

Have HP Laserjet P1102w printer. (Serial# edited Serial Number by Moderator) (Firmware 20130703)
Windows 7(64bit)
Printer on wireless home network.
For a period of time the printer prints wirelessly and prints from EPRINT EMail address OK.
Normally Wakes itself when print received.
After some period of time,however,the printer quits responding.
It did not wake when print received.Normally wakes itself when print received.
I manually turn it back on (front panel power button) and observe the following:
The blue wireless light is on.
The blue error light is on indicating no error.
the green light also is on.
Open Control Panel(View devices and printers) on computer and it shows printer error.
Can restore normal operation by unplugging for a few seconds and turning back on.
Can also restore normal operation by turning off and back on.
Will quit responding again after some period of time when trying to print.
Tried Windows troubleshooting and HP "Print and Scan Doctor".Tells me to reboot.
How can I fix this problem?
Can't reboot by unplugging or powering off when away from home so can't use ePrint email address to print.
Can't print when away from printer when it quits responding.
Thanks for any help.
This question was solved.
View Solution.

These settings are for setting up your wireless printer to stay connected to your router, keep wireless devices better connected and makes your router secure and hack proof.
1. Set a static IP in the printer (click here) outside the DHCP range of the router (check your manual).
   This is for Linksys routers but can be used for all routers. Verify your DHCP range and change this
   first if needed. More Wireless Printing help is here.
2. Verify in the printer that 'Auto Off' is disabled. Use the Embedded Web Server (EWS) by going to the
   printers IP address in your browsers address bar, click Settings Tab/Auto Off. Or use the Printer
   Assistant, Printer Home Page (EWS).
3. If the printer supports and has IPv6 enabled, turn off IPv6 in the printer.
4. Assign the printer a static IP address, try using 8.8.8.8 for the Manual DNS server and 8.8.4.4 for the
   Alternate preferred DNS server.
In the router: (Refer to your router manual for information)
5. Use a fixed wireless channel like 1, 6 or 11, never 'auto', try channel 1 first then the rest.
6. Set router to 20Mhz only, or 145Mbps depending on router.
7. Always use WPA2-AES (Personal) encryption, but you can try ‘mixed’ mode.
8. Disable WPS and never use it and disable UPnP for the routers security. Nobody can hack your
   system now and helps with wireless connectivity (if you want to know why, search the web).
9. If you have a dual band router (2.4Ghz and 5.0Ghz bands), make sure the SSID’s are NOT the same,
   they must be different for all bands, even for any Guest networks.
10. SSID broadcast must be enabled.
11. Save all settings. Power off both, wait 2 mins. Power on router wait 2 mins.
12. Power on printer and verify it reconnects to router.
Windows 7/8/8.1   Is Network Discovery on or off?
Control Panel/Network and Internet/Network and Sharing Center/Advanced sharing settings.
Under Home or Work (current profile) / Network Discovery.
Select "Turn on network discovery" and save changes.
Say thanks by clicking the Kudos Thumbs Up to the right in the post.
If my post resolved your problem, please mark it as an Accepted Solution ...
I worked for HP but now I'm retired!

How to connect a printer to a wireless connection using airport/time capsule

How do you connect a Cannon MP620 printer to the wireless network with my time capsule/airport? It was set up before but I've had to redo all the settings with a new Time Capsule and now the printer isn't working. Can't remember how I set it up before. Didn't seem that hard back then.
Thanks!

So you plugedd the printer into the time capsule usb right?
You need to re-add the printer in the system preferences one more time because the location has moved.

Looses wireless connection all the time.

Hi
I have a problem with my macbook pro, it looses its internet connection all the time. I don't know why since it's quite close to it's modem and other laptops that's more far away works fine. Any idea?
Best regards Frankensten

Does the router have the latest firmware? What happens when you are at a hotspot or a Starbucks?

Only one wireless connection at a time....Please Help

Since updating to 10.4.9 I can only connect one computer wirelessly at a time....when I had 10.4.8 on all three laptops ther were no wireless problems at all...Is there anyone else with this problem?

Okay, so when one computer is using the 802.11 band, no other computers can establish a media-level connection. Is that correct? In essence, the one connection locks out everything else. The MAC addresses of the other computers are not in the arp cache of the Actiontec, because they are not able to communicate via 802.11. The Multiplexing has gone from OFDM.
This is a weird one. I think I was wrong about the configuration. As odd as it sounds, it must be something with 10.4.9. I think when you rolled back to 10.4.8 you must have retained the Airport2 kext. If you get info on /System/Library/Extensions/AppleAirPort2.kext it should be 4.0.4, I think. 4.0.5 is in 10.4.9. Further granularity can be seen if you enter this in Terminal:
$kextstat | grep -i airport
I get this:
81 0 0x735000 0x69000 0x68000 com.apple.iokit.AppleAirPort2 (405.1) <37 16 11 2>
which says its AppleAirPort2 version 4.0.5.1 If you use pacifist and the 10.4.8 install disk you can get your original one back.
Lots of people have reported problems with 10.4.9 and Airport. But yours is a doozy.

Only allowing 3 clients to connect

If I turn off one of my laptops or iPhones I can get another one to connect.

What is your exact network configuration, including the make & model of your Internet modem and AirPort router(s)? Is your AirPort the only router in your network configuration? Is it configured to "Share a public IP address?"

Can you extend a wireless connection from one time capsule to another wirelessly?

We have two time capsules, one is connected to our modem and is transmitting a wireless network. It is in a really out of the way location, and we would like to set up a network printer in a different location on that network, so we got another time capsule (to hook up to the printer at a different location). Could we possibly extend the wireless network to the second time capsule with the printer attached so we could use the printer as a network printer? (If yes, HOW?)

Could we possibly extend the wireless network to the second time capsule
Yes, if the second Time Capsule is located where it can receive a good wireless signal from the other Time Capsule.
To test, move a laptop to the proposed location of the second Time Capsule. Log on using wireless on the laptop and spend some time to make sure that you have a good, solid reliable Internet connection. If you do, then the Time Capsule should work well at that location.
You would use AirPort Utility to configure the second Time Capsule to "Extend a wireless network". If you open AirPort Utility now as a test, can you "see" both Time Capsules there?
The reason that we ask is that you might need to check some settings on the "main" Time Capsule to be able to configure the second Time Capsule correctly.
with the printer attached so we could use the printer as a network printer?
If the same printer works on your Time Capsule now, then it should work on the second Time Capsule. If it is working now, you may not even need to re-install it again when it is connected to the second Time Capsule.
This is one of those times when you will not know if something will work until you actually try.

Cannot maintain wireless connection mac mini time machine

I have an iMac and a mac mini in the same room equidistant from my Apple TimeMachine.
While I have constant wireless contact on the iMac, the mini is constantly loosing connection, experiencing extremely slow response, etc. I have to go through diagnosis nearly everyday to have it reconnect to the internet. This started happening several months ago.

Use the advice in this thread to investigate the signal and noise levels that each Mac sees:
http://discussions.apple.com/thread.jspa?threadID=2347845&start=1
By the way, to avoid future confusion with forum posts, please distinguish between a Time Capsule (an Apple Wi-Fi base station with an integrated disk drive) and Time Machine (backup software included with OS X since version 10.5).

My 851W only allows a single wireless connection at a time

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