Outlook 2007 will only run in safe mode. It hangs but looks like it is loading in the normal mode. Nothing new added to the system. Running Windows XP Pro and Bit Defender 2008 antivirus. This computer is on a peer to peer network. It does look like the PST file is a right good size and we have archived quit a bit of the older stuff. I also did the built in Outlook diagnostic test and it correct one item but made no difference in running in the normal mode.