I don't think I've seen this one mentioned yet:

I'm syncing my Pre calendar with Exchange using the Outlook Web Access method. It works fine. I have many recurring meetings that were set at the beginning of the year. Some of them were sent to me as meeting invites by people in other timezones. Now, I am in the PDT timezone, but meetings that were sent from other timezones before Daylight Savings Time went into effect are an hour off. Exchange / Outlook have it set properly. There doesn't seem to be any way to force the Pre to show these appointments properly. Has anyone else run into this?