I often find that I can't always scroll to the bottom of the feature tree when I have a lot of features in a part. Has anyone else had this problem? I'm using SW 2011 X64 SP4.0 with an approved graphics driver. This makes it rather difficult to edit the features at the bottom of the tree... If I open and close the file or switch back and forth between various windows the problem goes away most of the time, but is certainly an inconvenience.