GMod won't launch, stuck at preparing to launch...

As are all my source games.

Things I’e tried:
Googling it
Searching FP for it
Reinstalling GMod
Reinstalling Ep. 2

Things that haven’t yielded results:
See above

[editline]15th January 2012[/editline]

Actually, it apparently just magically fixed itself after 6 hours. Delete thread or whatever.