iOS 5 calendar today not update in month view

My iPad calendar worked fine in the monthly view. After installed iOS5, the refresh of the today "blue box" at 00:00 am is not working and doesn't update at day change. To get the calendar updated, I have to change to week view.How to fix the calendar issueUnsync with wifi and unsync with calendar, and then sync with calendar to reinstall.

Posted in: iPad Calendar,ipad iOS5