MonitorWare Knowledge Base

I have one Windows 2000 Server with SP4 and all new patches which generates EventID 2020 from SRV service:
The server was unable to allocate from the system paged pool because the pool was empty.

This comes after about one month of operations. The server function as file/print server and is also DC for the domain.
The environment is 2k AD with WinXP clients only.

Any help is appreciated

Here's what Microsoft Knowledge Base says to this: http://support.microsoft.com/default.aspx?scid=kb;en-us;312362