1. Have you checked the schedule? 2. Does it sync if you force sync? 3. Did it stop working after you upgraded to PR1.1 ? My gmail and some other apps stopped working when I upgraded - for example swipe manager. Uninstalling and reinstalling it didn't help. However resetting the settings worked. So: Remove email account and re-add it. See if that helps. OR Reset the device to original settings. See if that helps.