The MSExchangeIMAP4 and the MSExchangePOP3 services may crash intermittently on a computer that is running Microsoft Exchange Server 2007 and that has the following event log:
Event Type: Error Event Source: MSExchange Common Event Category: (1) Event ID: 4999 Description: Watson report about to be sent to dw20.exe for process id: <ID>, with parameters: E12, c-buddy-RTL-AMD64, <version number>, M.E.Pop3, M.E.Diagnostics, M.E.D.ExEventLog.LogEvent, System.ArgumentException, 9adf, <version number>. ErrorReportingEnabled: False
A time-out thread that tries to release a connection object that has ended causes the problem.
To resolve this problem, install the following update rollup:
972076 Description of Update Rollup 2 for Exchange Server 2007 Service Pack 2
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.