Font smudges when libreoffice dependencies are installed

[David Demelier]

Hello folks,

When I install libreoffice, some fonts are also installed. I don't know
which ones, but it produces a lot of smudges in thunderbird and / or
firefox.

See the screenshot :

http://www.demelierdavid.fr/files/Smudges.png

It usually appears when loading a new tab or something similar and
disappear when you scroll a bit. It's quite annoying and I can't find
any solution..

I think the problem stays at the fontconfig, maybe conflicts? I'm using
almost defaults.

Cheers,
David Demelier