Stack Over Flow Problem

I have an HP running Windows ME and once in awhile I get the following message. You don’t even have to be doing anything and it just comes up. Here is the message:
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Terminating thread due to a stack overflow problem. A VxD, possibly recently installed, has consumed too much stack space. Increase the setting of MinSPs in SYSTEM.INI or remove recently installed VxD’s. There are currently 5 SPs allocated.
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Has anyone seen this message, and what did you do to clear it…. Thanks…Rod