Bug doesn't reproduce after full-upgrade. It's very strange but version iceowl-extension is still the same: 1.0~b1+dfsg1-1
$ dpkg --status iceowl-extension icedove Package: iceowl-extension Status: install ok installed Priority: optional Section: web Installed-Size: 4524 Maintainer: Alexander Sack <a...@debian.org> Architecture: i386 Source: iceowl Version: 1.0~b1+dfsg1-1 ... Package: icedove Status: install ok installed Priority: optional Section: mail Installed-Size: 31580 Maintainer: Alexander Sack <a...@debian.org> Architecture: i386 Version: 3.0.10-1 -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org