memory could not be read

Hi!
I do systems and networks support for a software company. Frequently we get calls about Windows 2000 machines returning an error after printing or closing an application:

”the instructions at xxxxxxxxxxxxx reference memory at xxxxxxxxxxx the memory could not be read, click OK.”

They click OK and are able to continue normally. While a few times, uninstalling a network printer has been the fix, we have not found anything concrete and at times the only thing that has worked has beena reinstall of the OS. This issue does not seem to be limited to users, SP versions, upgrade or original install of 2000. I am a bit stumped. Anyone have any suggestions or personal experience with this issue?

Thanks!