Description of problem: I'm using the XFCE Spin of Fedora and I just returned after a long break. Usually I've got to unlock the Screen now, but Fedora doesn't react to anything. I can still see everything I did before I left and the time is still 18:52, which is roughly the time when I left (now 21:15). Version-Release number of selected component (if applicable): XScreensaver 5.33-3.respin1.fc22 30-Aug-2015
So it seems that you can still see clock, and that perhaps means that screen is not locked yet and your system got frozen before screen is locked, right?
I can still see the screen unlocked. When I left nothing was frozen. My assumption is, that it froze when the screensaver started.
But maybe kernel got stuck for some reason, for example. I cannot do anything without another information.
Once closing as CANTFIX.