Thanks for information. I've found the problem also in Samba 2:
http://lists.samba.org/archive/samba...il/064911.html
I phoned to Adaptec, they don't plan any updates/patches to SnapOS, bad news.
But, by the way, they still sell SnapServer 2200 ...
It seems, that it is a problem with the explorer-deleting method, because if I use the "Total Commander" with his own deleting method, I have no problem deleting non-empty folders. Also creating new folders works in "Total Commander" perfect.
So maybe a bug in Explorer in Vista? Would not be the first ;-) ...or a new "feature"?