Whenever I open Outlook 2007 with all patches applied, it indicated that it was incorrectly closed and needs to check the integrity of its files. I recently migrated from a ThinkPad T61p to an X200T, the former with XP Pro SP3 and the latter with XP Tablet SP3. The X300T was a clean install. The problem must therefore lie with the .pst files and not the software or environment. I have run Office diagnostics with no errors found. I have also run fixpst with no effect. Outlook is noticeably slow but is stable once the file check is completed.
All ideas greatly appreciated.