I noticed that my outlook 2010 was hanging up (on a Windows 7 machine), specifically when sending/receiving emails, when switching folders and when switching from Mail to Task or Calendar. I started runing "Scanpst.exe" for my pst files, however I have one pst file (that is 349MB) that scanpst only says: "the Microsoft Outlook Inbox Repair Tool Can not recover the data in the file." The funny thing is that I can look in the folder in Outlook, and don't appear to experience problems, but run into issues moving items into the pst.
These hangups are really starting to slow me down. I would appreciate any input you can give. Thank you.