Exchange – Delegate No Longer Sees Calendar

After working for weeks, a delegate goes to open up other user’s calendar and Outlook freezes, maxing CPU at 99%. Other calendars for delegate open up fine. Have tried repairing Office, re-installing Office, different machines even yield the same response of freezing Outlook. Tool bar comes up but rest of screen is blank and hourglass hangs. Both are on same Exchange server. Delegate had 2 corrupted appointments removed with mdbvu32.exe.

Delegate – Win2k, Outlook 2000, Exchange 2000 SP3

Boss – WinXP, Outlook 2000, Exchange 2000 SP3

Seems to also be a SID listed in the Exchange Advanced Mailbox Rights tab but it can not be removed due to inheritance.

Any help would be greatly appreciated!

Thanks,
Max