I recently changed to Fedora 14. I was previously running F12, 32 bit with KDE. I am now running F14, x86_64, also with KDE. Since I made the change, my system occasionally locks up when the screen saver becomes active. I did a fresh install of Fedora, not an upgrade. The only indication I have is that sometimes I see a warning box that indicates the underlying security mechanism has suffered some kind of problem. I don't have the text of the error though, sorry.
A typical instance of this problem would be that I've left the machine for the night. It goes to the screen saver after 15 minutes and locks the system a minute later. When I return in the morning and press a key I might get one of a number of possible reactions:
1) No dialog to enter my password at all. The screen saver continues to run.
2) I'm able to enter my credentials and unlock the system but then the KDE desktop is not functional at all.
3) The screen the completely black and the system is not responsive at all.
In all cases, my only recourse is to hold the power button to turn the system off and turn it back on.
So, does anyone know if this is a known bug/problem? Is there some way that I can possibly capture useful information to help debug it?