BUG: soft lock detected on CPU#0
 

I get following message when booting Fedora 4:

It's not a hardware problem, as windows work fine. Needless to say that yesterday everything was fine and that I found about the error a few minutes before programming competition.

What does the error mean, how can I fix whatever went wrong?

Thanks

This might help:
https://bugzilla.redhat.com/bugzilla....cgi?id=160805