I'm having a problem with Zimbra-generated ICS calendar events in my Apple iCal.app calendar client. Events are being posted to my calendar (Apple calendar) seven hours earlier than they actually should be. -0700 is our GMT offset here. A meeting scheduled for 1300 shows up on my calendar at 0600. Not wanting to show up for work every day this early, I'd really like to find a workaround. For a reference point, the meetings show up at the correct time in the Zimbra web client.