Mountain lion crashes, with firefox as well

Question

Hi,
having seen others having problems with crashing Mountain Lion, my issue seems to be slightly different. I am running 10.8.3, so the alleged Safari 6 issue should have been fixed already. However, Mountain Lion keeps on crashing horrendously often in Safari (which I now have stopped using), but, annoyingly, it also crashes in Firefox (version 19.0.2), even if not as often (but still often enough to be incredibly irritating). The screen just goes black without any warning in the middle of using a website. Initially, I thought it was an issue with Flash (fully updated as is Java), but the problem persists even on websites with no videos running.
Would really appreciate help on this.
NM

Answer 1

If you are having the same problem with multiple browsers, then the problem is probably something common to both browsers. Like something in your internet plugin folders, which are /Library/Internet Plugins and ~/Library/Internet Plugins. You could remove the plugins and see if the problem is fixed. Here is a reference:   Safari 6 (OS X Mountain Lion): If you need to remove a plug-in
if that doesn't work, I suppose I'd try some routine maintenance/troubleshooting maneuvers, like a safe boot, a test user account, repairing permissions, and repairing my hard disk.
Mac OS X: What is Safe Boot, Safe Mode?
Isolating an issue by using another user account
About Disk Utility's Repair Disk Permissions feature
Using Disk Utility to verify or repair disks