This is a new feature that I discovered this by accident. After switching to Windows 7, I drag windows to the edge of screen to maximise or dock it, and then drag it off to go back to the previous window size.
But, I had this problem where that after maximising some windows like Office Word 2007 or Office Excel 2007, you can’t drag it out to restore it to the previous size! I think it must have something to do with Office doing funny business with window decorations…
Anyway, I just realised that this now works – after installing Office 2007 Service Pack 2. At least I think that’s what solved the problem. Anyone care to confirm?