>I have a Pentium100, running DOS 6.22 and Windows 3.11, with 32 meg RAM,
>recently upgraded from 16 meg (when the problems started).

This is the biggest clue as to what may be the problem.  Have your new RAM
chips tested by your supplier.  Make sure they are the same speed as the
original ram chips.  If the problem started when you added these chips,
either they or the sockets they plug into are defective.  It never hurts to
replace the Simms and see what happens.

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