We have a UC500 (20T2 and CUE 3.2) with 524G phones (Firmware ver. 8.1.13):
Date and time are correct on the main display on the phone (Same in CUE and CME), but the time on the call history is incorrect. For calls received today 7-10-09 the phone say the calls came in 7-16-09 (6 days in the future).
See the attached pictures