In last week’s UPDATE, I mentioned the need to patch all your Exchange clients, not excluding Windows Mobile. The process for doing this by hand is pretty tedious. Thankfully, Microsoft today released an all-in-one DST update that contains a single CAB file (plus instructions) that will update your device to have correct time zone information. You need to install the CAB file after you update your Exchange mailbox’s calendar; once it’s installed, you’ll need to change the time zone on your device manually to make Windows Mobile notice the change. Then you’ll need to change it back.