Christophe, I fixed my problem by upgrading the mini-PCI WiFi to the Atheros a/b/g card from HP. I haven’t experienced any problems at all since dropping the Intel ProSET card. Some users of the 2200BG chipset report success by downloading the current drivers direct from Intel and then turning off the cards power management. That did not work for me. Good luck!

Did you find an answer to your TC1100 / Netgear trouble ?
I’ve something like you :
My users, shipped with TC1100, access the netgear router one ot two times a day. As they are on the road most of the time, they deactivate the Wifi (Q menu). But, often, when they try to reach the access point again, they fail. The only answer is to un-plug/plug the power of the router !

Any help would be great…