Firefox and Safari won't open
I updated my mac a couple days ago and now nothing works. Safari and Firefox the wheel just spins. Chrome shows me the page then freezes and saids unresponsive. Mail works. Can not open system preferences. Have rebooted 5 or 6 times. Was wondering if I should try and download mountain lion, but not sure I could.
iMac, Mac OS X (10.6.8)