I've just posted this bug report on the Launchpad site:
(This effects Linux Mint 8 Helena. I didn't have any problems with Linux Mint 7 in this matter.
The clean install went fine - and I had chosen English for this. But then when I wanted to add German language support, things started to go wrong...
Please see via the above link the log of what happened when I installed German language support.
I hope someone can help me with this, as I really need to have both German and English language support on my computer. Thank you!