Ubuntu Upgrade to 12.04 LTS -> Libreoffice not working anymore

After a update session of several hours from Ubuntu 11.04 over 11.10 to 12.04 LTS I wanted to start using libreoffice, but it terminated right after start:

$> loimpress
terminate called after throwing an instance of 'com::sun::star::uno::RuntimeException'

As root it started without problems, after some googleing and seeing the gdb-trace I found the solution to my problem. Something with the migration of the previous version config files got wrong. So I just deleted them. It is not very elegant, but worked for me and as I did not make any special settings in libreoffice for me it was not painful.

Caution! you will loose all libreoffice-settings with this method

For me the important part was deleting the .ure-Directory, after this it worked.

$> cd ~
$> sudo rm -rf .libreoffice
$> sudo rm -rf .openoffice.org
$> sudo rm -rf .config/libreoffice
$> sudo rm -rf .ure