Just an update, I received a 3945 I ordered from ebay that is for IBM's and it worked fine with no BIOS block. Wireless signal is not MUCH better and the drover works great on my Ubuntu set up. I would recommend this to anyone else who may have issues with the Atheros card to replace it with an Intel.

I have no experience with the atheros cards, but my intel 4965 works great. Are you using the old madwifi or madwifi-ng? There are different branches that you could try... Apparently the old CMOS hack (no-1802.com) does not work on T6x thinkpads, so you are forced to always use "official" Lenovo wi...

So I got a new T61 and got Ubuntu Gutsy 7.10 working on it pretty well. But a huge problem is the wireless driver of Madwifi. It gives very very low signal performance and I can't even connect to AP's that were no problem to do with Windows. I know the card itself is fine because I get double or tri...