Ok, here's the thing: installed 4.0 fresh on an even fresh and new macbook pro. (have the 3.0 safely and stable running on my iMac) For some time everything's fine. Then: 1. wanted to clone the VM for a backup. It was done in 2 minutes -strange. When I looked at the clone of win XP its size is 1,26 GB?! Tried several times. What's this? 2. VM suddenly freezes since several days: a popup follows with: unable to access hard disk1. input/output error. Can't use the VM at all anymore. What's this? and yes: write/reading premissions are fine.