A customer using MAC Lion 10 along with Parallels Desktop for MAC to view Outlook 2010.

Recently , his copy of Outlook 2010 (inside Parallels Desktop) is consistently showing calendar entries one hour behind , although when you hover the mouse over the calendar entry , it does how the correct time.

Also, when the customer view his calendar entries using Outlook Web Access is show the correct time

Does anyone know to resolve this issue?