XADM: Dumpster Size Performance Monitor Value Wraps Prematurely

The value of the Performance Monitor counter, MSExchangeIS Private - Total size of recoverable items, displays the incorrect value and then resets to zero when the total dumpster size increases beyond 2 gigabytes (GB).

The information store holds this value in bytes. When the information store provides the value for Performance Monitor, it needs to convert the value into kilobytes, and copy it. There was a code defect in the way the original value was being converted and copied.

To resolve this problem, obtain the latest service pack for Exchange Server version 5.5. For more information, please see the following article in the Microsoft Knowledge Base:

Microsoft has confirmed this to be a problem in Microsoft Exchange Server version 5.5.