Ho Ho Ho - those chaps at MS certainly know how to generate work for support people don't they...
Known issues with Office File Validation
Opening files from a network share that have many charts or points of data will take longer to open in Office 2003.
Should have stuck 'or not at all' on the end of that.
Thanks MS - can't even set wsus to remove it, only decline it.....
Microsoft Security Advisory: Microsoft Office File Validation for Office 2003, 2007 Office, and Office 2010: April 12, 2011