Firefox Hanging problems fixed in Ubuntu 8.04 and Firefox 3
Tuesday, September 30, 2008 - 09:00
I noticed that people still want to figure out why Firefox is hanging all the time. I have no idea why it does that but the problem goes away with the new Firefox. I have had the Firefox 3 for a few days now, as well as the new Ubuntu and the Firefox freezing problems has totally vanished. No more Firefox crashing.
Submitted by Gdulus (not verified) on Tue, 2008-08-05 22:05.
yeah, mine is hangin all around .. flash = crash, lots of js = freze. And you now what, under Vista is no problemo. Some times i hate Canonical
Submitted by extreme irritant (not verified) on Thu, 2009-03-05 10:02.
Uboontu 8.04 w/ FF 3 hangs from Live CD on a fresh boot, using an Ubuntu certified HP nx6110 w/ 1/2 G RAM, when loading a large image (> 1024 x 768) or pasting ~1M data in an HTML form submission field (for HTML code verification).

I have the absolutely opposite experience. Firefox hangs when being closed, the process is hardly ever close properly. There is also bad interference with Kaspersky 7.0
This happened when updating from 3beta5 to 3rc1