Looking for some help on a issue we are trying to track down. One of our clients has a number of re-occuring appointments that were set up with a timezone of EST (GMT-5). Over the weekend the timezone switched to EST (GMT-4) which appears to have led to every appointment being duplicated down to their BlackBerry device. If you look at the original appointment it still shows 12:00 but if they look at the individual instance for today it shows 13:00 as though Zimbra has automatically slipped the time.

Is anybody else seeing this behaviour ?