Hello everybody, I gen the next warning every hour. Microsoft has an Hotfix available for this problem, but in combination with an error that has exactly the same description as the warning below. I already have the hotfix, but wanted to check first if anyone else have had this problem before. I already tried restarting the Exchange IS service and the other services but the warning keeps coming back every hour. Is there someone who has seen this warning before and knows a solution? Thanks in advance!!!!! With kind regards, Mark Meelhuysen Event Type: Warning Event Source: MSExchangeIS Event Category: Performance Event ID: 9582 Date: 12-07-2005 Time: 15:19:06 User: N/A Computer: DC-SHOEBY2 Description: The virtual memory necessary to run your Exchange server is fragmented in such a way that performance may be affected. It is highly recommended that you restart all Exchange services to correct this issue. For more information, click http://www.microsoft.com/contentredirect.asp.