New
#11
OK, I see your pst which is 5.7gig! I would suggest you look at the links I provided for repairing the pst file and see if that helps to fix your delete problem. Let us know.
Edit: You may also want to look through this as well - You may experience performance problems when you are working with items in a large .pst file or in a large .ost file in Outlook 2007
And make sure you have the latest updates/service packs for your office suite.