[Qgis-user] Win7 64bit: GRASS-plugin nearly nonfunctional (Bernd Vogelgesang)

[Bernd Vogelgesang]

Hi there,
i tried really everything, but the grass plugin really gives me a hard time.
First i used a fresh osgeo4w installer advanced:
loading a layer is fine when not using advanced options, doing stuff 
like v.clean.bpol makes grass and qgis freeze in 80% of the time, mostly 
reporting that it can't delete a hist-file or other problems.
Uninstalled everything and used the desktop version: same problems
Unistalled that completely and used the standalone version: no luck
I'm really desperate now. I have to clean up lots of messy polygons 
drawn by someone with google earth, and the grass plugin for me is the 
only way to solve that.

Any ideas what might cause that problem on Win7? It seams to me that 
Grass is somehow not fully allowed to write/delete stuff there.
This happens to me on 2 different Win7 64bit machines, so i assume i 
can't be the only one facing these problems!

Cheers
Bernd