Since updating to SP3 :

1. Excel documents, when opened, show as blank in Excel.

Activity Log show as Opened

2. Closing the Doc does not return doc to library
Activity Log shows nothing .... ie - the doc is still open

3. I need to Reset the doc to do any further actions on the Doc

4. After Checking out the Excel Doc, I opened it
Made no changes to the doc
Closed it

GroupWise kicked up an E511 Error during the Close - Unable to REturn
doc to Library

I wasn't in DMS mode while editing the doc !!