OK, thunderbird runs fine, since I left these packages installed. With the installation, these packages were updated and upgraded.
But one strange thing remains: everytime, whe I do update or upgrade since this time, I get this message from the updater: Fehlschlag beim Holen von http://ppa.launchpad.net/ubuntu-mozilla- daily/ppa/ubuntu/dists/lucid/Release Unable to find expected entry deb/source/Sources in Meta-index file (malformed Release file?) so I did the command you wanted me to do, and here is the result of dpkg -l | grep thunderbird: and...@andrea-desktop ~ $ dpkg -l | grep thunderbird ii thunderbird 3.1.2+nobinonly-0ubuntu1~umd1~lucid mail/news client with RSS and integrated spa ii thunderbird-3.1 3.1.3~hg20100820r5774+nobinonly-0ubuntu1~umd1~lucid mail/news client with RSS and integrated spa ii thunderbird-3.1-dbg 3.1.3~hg20100820r5774+nobinonly-0ubuntu1~umd1~lucid thunderbird 3.1 debug symbols ii thunderbird-3.1-dev 3.1.3~hg20100820r5774+nobinonly-0ubuntu1~umd1~lucid Development files for Mozilla Thunderbird 3. ii thunderbird-3.1-gnome-support 3.1.3~hg20100820r5774+nobinonly-0ubuntu1~umd1~lucid Support for Gnome in Mozilla Thunderbird 3.1 and...@andrea-desktop ~ $ can you read anything out of this command, what could cause this strange message?? Greetings Linuxexperte -- installation of thunderbird 3.1.2 end up in white screen https://bugs.launchpad.net/bugs/621883 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs