Yes, but it was so long ago, I have forgotten!
It wasn't firefox that was the issue... it was something else I had done with another program or something. Shoot, I wish I could remember what it was now.
If I remember, I will definitely let you know.
---------- Post added at 12:11 PM CDT ---------- Previous post was at 12:04 PM CDT ----------
OH! I remember, it was a Kernel update...
I logged into the old kernel and it worked fine... so on bootup, hit escape and choose an older kernel, and you should be fine until the next kernel update.