Intel(R) PRO/Wireless 3945ABG problems.

Question

I have a Dell e1405 laptop (aka 640m I believe) with a Intel(R) PRO/Wireless 3945ABG adapter, running Windows Media Center Edition. I usually leave my laptop on and docked to a CRT and USB keyboard/mouse. It seems that after a few days (usually 4-5) my wireless connection dies. It starts out first as not being able to make any new connections, and then all active connections are dropped. If I deactivate the wireless connection or turn off the radio I am unable to reconnect to my wireless router until I reboot. The issue is not with my wireless router (Linksys WRT54G), as the other PCs are never disconnected. When the wifi on the laptop dies I am able to ping the laptop itself, but no other PCs on my network. Before my applications usually reported errors similar to this when the wifi dies: 'WARNING: error writing socket: No buffer space is available or a buffer deadlock has occurred. The socket cannot be created' I have taken the following actions in attempts to remedy the problem: Update the wireless driver. Clean install of windows. Increased the number of tcp/ip connections (http://web.ircsystems.net/codemastr/bufspace.html) (not 100% sure that this actually did anything) After doing the above mentioned steps I no longer see the buffer space errors, but the wireless still quits after a few days of uptime. I have checked the Event logs and the only significant thing that has popped up was a Event ID 4226 (Tcpip): 'TCP/IP has reached the security limit imposed on the number of concurrent TCP connect attempts.' I understand that this can be caused by many things (p2p traffic, worms, a lot of http traffic), but at the time that the event was recorded the only thing I had going were a few SSH sessions and Aol instant messanger. I've used tcpview (http://www.microsoft.com/technet/sysinternals/utilities/TcpView.mspx) to check my network connections, and there is nothing out of the ordinary when the wifi dies. (I've checked with netstat -an as well). Anyone else experience anything like this or have any suggestions? My setup: Dell e1405 with Intel(R) PRO/Wireless 3945ABG. WPA2-Personal (WPA2 PSK) using AES/CCMP encryption. Intel Driver Version: 10.5.1.75 (hardware version 2.0.30) Windows XP Media Center Edition (2005). Linksys WRT54G (running DD-WRT v23 SP1 Final) Windows Firewall is turned off. The only other related software is a cisco VPN client (though this issue has happened previous to the installation of the vpn client)

adipate · Answer

Well I believe the Intel PRO wireless apps that scan for wireless APs, etc are the cause of my problem. During the last episode windows began complaining about being low on resources and the system was nonresponsive until I killed the two apps. I have since disabled them from starting with my laptop and set windows to manage my wifi connections. I have not had any problems since. I hope this information useful for someone.

These are the two applications that I believe to have been causing the issue:
ZCfgSvc.exe
iFrmewrk.exe

Networking, Internet, & Bluetooth

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