We are running GW 7.0.3. BES I don't remember the mr number. The BES is running the GW 6.5.7 client. I have one user out of 40 that is experiencing this. The personal address book that the Blackberry (BB) is supposed to sync to is empty, however, all of the contact entries are on the BB. We tried to track this down the other day and while we were looking at her GW client the entries popped back in. Now they are gone again. We have not done anything that would cause the entries to pop back into the address book. We did notice that her BB had just synced in the last minute.