win87em.dll errors when printing

We have about 20 users here getting an error message when
printing to networked (Novell)HP laserjet 4000 or 4050
printers from Windows 2000. The PC's are part of a batch
of 140 rolled out together with the same hardware and
software image.

The error is "XYZ caused a General Protection fault in
module WIN87EM.DLL at xxxx:yyyy"

So far we have tried different printer drivers, disabling
the onboard sound, copying the win87em.dll as an exe file
and running on startup. none of which have worked with any
consistency