After I ran those commands, it happened twice. Is there any other Intel driver I can try to see how it works?
Sorry that didn't help. At this point I'd probably conclude that there's just a weird bug with the particular build of the iwl2945 driver that you're using. It will probably be fixed in an update, but it seems to me that the iwl project has a tendency to keep breaking stuff more than it improves it, at least on Ubuntu (I don't know if it's the fault of the Ubuntu packagers or the iwl people).
There's an older version of the Intel driver called ipw3945. There are instructions here on compiling it for Hardy, but there's a lot of hacking that you need to do and parts of that tutorial are vague, I think, so don't expect it to be easy.
Another option is ndiswrapper, which allows you to drive your card using Windows drivers. If you want to go that route and need instructions, please tell me the output of:
Code:
lspci -nn | grep -i intel
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