We recently rolled out a Hosted Exchange solution to replace our local Exchange installation. Since then when users (more by the day) click on a calendar (some people it's their own, others it's a shared calendar) Outlook shuts down completely and asks if we want to re-open it. You do this, click the calendar, and the same thing happens.
Running Outlook 2007 in cached exchange mode.
If we run Outlook with the /safe switch it fixes the problem.
If we run in any of the safe 1/3/4 switches it doesn't fix it.
Anyone got any ideas? We can't figure it out....