So I've been having random crashes, and slow-downs with firefox (probably because I added a buncha stuff like crash protection, and other things) and I don't have enough ram in my machine. I moved back to a classic mozilla and accepted that when I crash I lose all of my tabs, and history and all that jazz. Been working so-so for the past month.

But I've now gotten to the point where I can crash Mozilla, and when I try to start it again, I get zip. Tried it from the commandline and got a segmentation fault. I googled (yay lynx!), and the recommended strategy was to uninstall it, and reinstall it.

That worked... the first time.

The second time, it didn't. I needed to uninstall, reinstall, uninstall, reinstall. Then it worked.

The thrid time, I skipped right to u/r/u/r and tried it. Damnit. Then moved to a u/r/u/r/u/r - which didn't work *either*. Uninstalled Mozilla, and surrendered and tried Firefox, it seg-faulted too. Uninstalled that. Tried reinstalling Firefox, no dice. Tried reinstalling Mozilla, and it worked enough for me to save my webpages.

Took down machine, and tried memtest86+ while I was at work. 63 passes, no errors.

What should I try next to try and figure out what's causing this issue?

dpkg -l mozilla-browser
ii mozilla-browse 1.7.12-0ubuntu The Mozilla Internet

Perhaps this is due to the history.dat file which tend to increase it's size to various MBs. Try to rename it (or delete it) and see if it make any difference.
Else you can try to remove your ~/.mozilla directory and see if it works (well, do not remove it, just move it to another location or rename it)

Once I had a similar problem after installing some fonts in ~/.fonts (using the KDE Control Center interface). I still haven't figured how could some fonts force Firefox to segfault at startup, but moving ~/.fonts out of the way helped.
Just an idea!

Other weirdness with Mozilla...

Figured out one of the ways to make it speed up. I have issues saving stuff, since it won't put up the box for minutes (or decaminutes) at a time.

If I change the focus to one of my ssh terminals, then it pops it right up...