Tcpsvcs.exe process memory usage continuously growing

In my case Wndows Server 2003 DC with dhcp server and DNS dynamic update enabled, tcpsvcs.exe process memory usage was continuously growing. Here are the counters for handle count and private bytes for tcpsvsc.exe, after reboot of the server:


After 30+ days, tcpsvcs.exe has occupied around 500MB:


After applying microsoft hotfix for this issue kb 939928 http://support.microsoft.com/kb/939928/en-us , tcpsvcs.exe memory leak was fixed. After 30+ days, tcpsvcs.exe process has occupied only ~ 13MB :

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