Comment 3 for bug 468266

Seems to be related to https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/580814

The common problem is the Bulgarian myspell dictionaries, which are cp1251 encoded. After you convert them to UTF-8 as explained in the bug above, then you have again spell checking for evolution and empathy.

Attaching the converted dictionary files (based on version 3.0-9build1), which need to be extracted in /usr/share/myspell/dicts to fix the problem.