reopen 854488 thanks Hello,
I started thunderbird and got anxious seeing it was taking more than 30 seconds. After some investigation by running htop, I saw it was migrating my profile, but it was unexpected.
I searched a bit and stumbled upon this bug report. However, I didn't get any message. Judging https://anonscm.debian.org/cgit/pkg-mozilla/icedove.git/tree/debian/thunderbird-wrapper.sh?h=debian/sid I guess it's because I'm running xfce, but zenity is not installed by xfce... Either zenity should be added as a dependency, or the migration script should rather check which message box tool is installed and run that one, instead of the most cosmetic - yet unavailable - tool.
