My problem started on Windows XP: a computer (that was working fine for many years) had a problem, that I can't quite remember (may have been to do with the startup process) - but I solved it by swapping the keyboard with one on another machine.

Now for several years the problematic keyboard has been working fine - on my main machine that runs Ubuntu. I also dual boot Windows XP - and have had no problems on either OS.

However I recently installed Ubuntu 11.04 Natty (pre-alpha) and found that any keyboard press causes freezes. (All still works fine on Ubuntu 10.10 and 10.04 and Windows XP)

Just wondering why I might be experiencing this? Seems strange to me that's its not consistent.