I checked it up again: dir c:\windows\winsxs\amd64* accounts for 10829 directories dir c:\windows\winsxs\x86* accounts for 6163 directories Total 16gb. So I w

I checked it up again: dir c:\windows\winsxs\amd64* accounts for 10829 directories dir c:\windows\winsxs\x86* accounts for 6163 directories Total 16gb. So I was wrong, 20GB came from the artist machine I was inspecting the problem. On mine is 16GB In total here is what I have: C:\Windows\winsxs>cmd /c dir /s | tail Directory of C:\Windows\winsxs\x86_wwf-system.workflow.runtime_31bf3856ad364e35_6.0.6002.18005_none_670656a59d28c52a 06/03/2009 03:34 PM <DIR> . 06/03/2009 03:34 PM <DIR> .. 02/18/2009 11:39 AM 540,672 System.Workflow.Runtime.dll 1 File(s) 540,672 bytes Total Files Listed: 70492 File(s) 17,392,399,667 bytes 54416 Dir(s) 3,145,158,656 bytes free