1) Tried removing firefox and reinstalling (including removal of .mozilla directory).
No joy. 2) Tried firefox -safe-mode No joy, but terminal window had hundreds of expr: syntax error lines. So seems not to be the extensions, at least not directly. In case it helps, I have set up an example that causes the problem on my system (which doesn't seem to affect 1.5.09, or even 2.0.0.1 on some other systems -- very odd). System for homework delivery is at http://macnash.admin.uottawa.ca/etphp/ (trailing / important) Log in as user 1234 with pw=tester. You will be seen as a teaching assistant by the system. Click the "Sample Assignment" A Student, whose SN is 4321 (that login will work too with 1234/Student) has submitted "Accurate Summation.pdf" which causes lockup when clicked. Should offer Save / Open dialogue. Am willing to continue to participate in helping to resolve this. As mentioned, Epiphany-browser and Galeon have troubles too, but Konqueror OK. -- Firefox Crashes on Saving Files https://launchpad.net/bugs/45008 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs