Like in the topic, after all day I spend on reinstalling vista once and once again (with different things removed) i finally found out that after removing one of the features from NETWORK in Removal components i can no longer disable things from 'Turn on/off windows features'. It says. "An error has occured. Not all of the features were changed." Actually, none of them were For sure it isn't Windows Collaboration. Anyone come up with this error, and know which thing from network causes it? Thx for your reply.