I know this if off topic but I thought you might be interested
(especially like me you have a 1GB mailbox and a 2GB pst, also thank
God for the new windows desktop search).

Last Friday Microsoft released a performance hotfix for outlook2007
when accessing large .ost's or .pst's

(hotfix also includes fixes for 2 other bugs)

KB article is here. http://support.microsoft.com/kb/933493

There's a link in the article to the Microsoft download centre for the
hotfix. (are we all Genuine?)