I just upgraded from M2 to M3 (on Fedora 4) and am having a serious problem with the calender. The dates for new all day events are all goofy: if I set an all day event for Feb 3, it will show up on the UI as Feb 2 and 3. The tool tip shows the event as "Feb 2-Feb 2." This occurs in all the views (month, week, etc), and I tried to check using Sunbird to see about the ics--same problem.
All day events entered before the upgrade appear to be fine.
This sounds like it is related to Bug 5220, but it *is* different. Anyone else have this sort of problem?