I've been using various versions of Outlook for more than 10 years. I've
never had a problem like this until upgrading from 2003 as part of a general
Office upgrade. Whenever it is sending and receiving it freezes the entire
computer - a quad-core Vista Home Premium box with 3G RAM. Sometimes the
freeze will last as long as two minutes. sometimes I have to kill Outlook
process to get going again. Everything else on the computer works perfectly.
Outlook did, too, until the upgrade. I've done all the file name changes, new
profile, etc., Only add-ons enabled are search index and connector. Main
e-mail account is a POP3. Secondary is MSN.