I have been doing quite a bit of reading and I don't think I have missed a previous post about this problem.

I am running Windows XP at work. After I installed the Colemak keyboard layout my machine would reboot unexpectedly. When it did reboot, it would reboot again the next 3 times that I logged in. After I was finally able to get logged in without it rebooting, all the applications that had been set to use the Colemak layout were once again switched back to qwerty. The initial unexpected reboot seemed to happen when I was doing a ctrl+<some key> combination. I know its not a very specific description. I would appreciate any help from anyone who has experienced this issue. Thanks.