F17 black screen for activities
F17 -- Running fine since 2012 -- Now: if I select any "activities" (Terminal, Firefox, anything) I get a black screen (blank, cannot view anything in screen). All updates installed. Still running fine as a file server. What can I do?
Can you try creating a new user to see if the problem persists?
yum history
would tell you what updates you've received recently. (I haven't read about this bug anywhere though.)