I am using outlook 2007 on a comcast hosted server and I can access my data (usually) from my desktop, my laptop and my android phone. Suddenly my desktop version crashes whenever I try to open the calendar. It is fine in the other modules (email, contacts) and I have no problem with any module on the laptop. I have tried running outlook diagnostics and have run scanpst multiple times - the last time getting 'no error' as the message. Can I just delete the pst and let it rebuild from the exchange side? I depend on the calendar heavily for all my scheduling. I have also rebooted the desktop a few times. Oh - I was confused by the outlook diagnostics output-it said no problems and then listed a number of problems like 'your hard drive will die soon, maybe' or other scary words to that effect. Thanks --- Scott