I apologize if this is in the wrong place but it seemed appropriate.
Mint just updated and shot Firefox in the face. Unfortunately I didn't save the error message I got and was able to save it by completely removing the package...
3.0.15+nobininoly-1mint1-0ubuntu0.9.04.1 meta package for the popular mozilla web browser, which appears at the top of the package list in synaptic when I search for firefox.
I also forced it back to the early Jaunty update, which I know worked, just to be safe.
Don't know if this helps anyone, or if it's a known issue, but figured I would share.
I'm using Mint 7, Gloria 64bit edition. Kernal Linux 1.6.28-15-generic, GNOME 2.26.1