Needed some diskspace freed up on my M$partition. So i went and got me MacAfee Uninstaller 6.5. That showed me that i can regain about 2 gig's of space by deleting junkfiles that weren't accessed for more than 180 days - cool!!
I actually recovered about 24 gig's - all my data and doc's are gone.
Well - now I can make that additional debianpartition i always wanted and if i get somebody to burn me a gentoo cd play around with that, too.
If you got a M$ partition and think about using Uninstaller you better watch it!