THe CEO of my company has a very nice over built Dell XPS system with 2 dual core procs and 4GB of MEM. He started having issues last week with the computer so I upgraded him to Office 2007 thinking it should solve the problem. I have found since then I believe he has a corrupted .pst file, that solves a little of the problem. The other problem is that I have wiped and reinstalled XP and Office 2007 Full Installation and Outlook keeps freezing and takes around 30 seconds to start up. I have disabled Add-Ons and the problem persists. The only thing is he has around 30 - 35 mailboxes open that range from 100MB to 3GB. Any suggestions. Also I have setup Outlook 2007 onto another computer with all mailboxes and problems are still persisting. Is this a Word 2007 issue?