I've nailed down the problem a bit further. This seems to be some strange permissions problem.
1. When I delete all contents (including hidden files) from a newly- created test user's home and then log in as that user (using KDE) and start firefox, everything works fine. Opening file pickers works fine. Even the Ubuntu start page gets displayed properly. 2. When I delete all contents (including hidden files) from my home and then log in as me (using KDE) and start firefox, I still see the same symptons as before: Opening a file picker still crashes, and I still get the warning about the missing start page (bug #49152). locale produces the same output for both users: [EMAIL PROTECTED] LANGUAGE=de_DE:de:en_GB:en LC_CTYPE="[EMAIL PROTECTED]" LC_NUMERIC="[EMAIL PROTECTED]" LC_TIME="[EMAIL PROTECTED]" LC_COLLATE="[EMAIL PROTECTED]" LC_MONETARY="[EMAIL PROTECTED]" LC_MESSAGES="[EMAIL PROTECTED]" LC_PAPER="[EMAIL PROTECTED]" LC_NAME="[EMAIL PROTECTED]" LC_ADDRESS="[EMAIL PROTECTED]" LC_TELEPHONE="[EMAIL PROTECTED]" LC_MEASUREMENT="[EMAIL PROTECTED]" LC_IDENTIFICATION="[EMAIL PROTECTED]" LC_ALL= -- Firefox crashes when any dialog gets opened https://launchpad.net/bugs/53355 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs