Windows 7 Freezing When Connected to Wired Networks
Several users have reported an issue in which Windows 7 freezes when connected to wired (Ethernet) networks, but not when connected to wireless (WiFi) networks.
As described by Bryan Archambeault, a poster to Microsoft’s TechNet forums:
“So, as I mentioned above, I brought a wireless access point with me to the office today. I hooked up my laptop with the wired connection after having run it at home without any problems, and within 5 minutes, it locked up. I hooked up the wireless access point, removed the wired cable from the laptop, rebooted, and it’s now been working flawlessly since I came in this morning – about 5 hours ago.”
Another poster adds:
“I have been experiencing the same freezing problems with my T61p at work but at home where I have the wireless hub I haven’t experienced anything.”
It appears that, in some cases, this issue may be due to Cisco PIX hardware.
If you are experiencing a similar problem, please let us know at info@windowsfixup.com.
Filed under Windows 7 by on May 18th, 2009. Comment. 
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Comments on Windows 7 Freezing When Connected to Wired Networks
Same issue with t61p and windows seven 64 bit. Wireless no problems -stable for weeks. Plugin to Ethernet and it locks up in 5mins or less. No errors in log. Suggestions?