Comment 54 for bug 72812

I have the same problem in both Firefox (2.0.0.13, maybe as far back as 2.0.0.4?) and Thunderbird (2.0.0.9) under SUSE 10.0, and then under SUSE 10.3 on 5 different computers (with almost identical hardware and nVidia drivers, all with dual or triple monitor setups). It most definitely is still a problem in Firefox 3 rc1.
It seems to happen most often when I am developing HTML/PHP code and refreshing a lot. It's quite aggravating when I expect the page contents to change and they don't and I think its a problem with the code rather than with the browser.

I did notice one thing that might help. Pages under 64k total size don't seem to exhibit this problem. To test this I filled a properly formatted HTML document with lorum ipsum text so the exact size of the file was just under 64k while I was the bug was manifesting. It loaded and flowed correctly. I increased the file to just over 64k and the page no longer refreshed when reloaded. Back down to just under 64k and the problem went away again. Perhapses there is a buffer being overflowed? A problem at exactly 64k seems very suspicious indeed.

Some times it is limited to one or two tabs. If only Firefox is exited, or only Thunderbird, they seem to 're-infect' each other. Quitting both Firefox and Thunderbird is the only way to alleviate the symptoms besides the window resize trick.