I can confirm this is happening. At first, it seemed like every time I saved tabs/session, then performed an upgrade to new version, my tabs would not be restored when restarting and seeing the firefox upgrade page; and, I believe this is still true, as it has happened the last 3 times I upgraded firefox.However, I am going to stick with the OP's problem for now.
Again, I confirm this is happening on firefox-3.0 (3.0.3+build1+nobinonly-0ubuntu0.8.04.1) [upgraded <1 hour ago]. This is the newer version that the OP does not have.
I do have torbutton installed, but NO setting is set to affect/delete/not store non-tor pages/tabs/history. It is set to "Prevent session store from saving Tor loaded tabs" but NOT set to "Prevent session store from saving Non-Tor loaded tabs", and the pages/tabs up were not tor pages and tor was even disabled.
I do have firefox clear browsing history on exit, but this has never affected tab/session saves before.
Problem happens exactly like Kyle says:
1) Exit & select "Save & Quit";
2) Start FF right back up [or upgrade to new version then start];
3) Blank page displayed [or upgrade page].
I can confirm this is happening. At first, it seemed like every time I saved tabs/session, then performed an upgrade to new version, my tabs would not be restored when restarting and seeing the firefox upgrade page; and, I believe this is still true, as it has happened the last 3 times I upgraded firefox.However, I am going to stick with the OP's problem for now.
Again, I confirm this is happening on firefox-3.0 (3.0.3+ build1+ nobinonly- 0ubuntu0. 8.04.1) [upgraded <1 hour ago]. This is the newer version that the OP does not have.
I do have torbutton installed, but NO setting is set to affect/delete/not store non-tor pages/tabs/history. It is set to "Prevent session store from saving Tor loaded tabs" but NOT set to "Prevent session store from saving Non-Tor loaded tabs", and the pages/tabs up were not tor pages and tor was even disabled.
I do have firefox clear browsing history on exit, but this has never affected tab/session saves before.
Problem happens exactly like Kyle says:
1) Exit & select "Save & Quit";
2) Start FF right back up [or upgrade to new version then start];
3) Blank page displayed [or upgrade page].
-Derek