I'm having freezes and maybe it could be my memory on the Cyberstorm. What is a good program to test this with?
Sometimes swapping simms around will make the symptoms change.
32mb 60ns simms are dirt cheap,might just buy a new set worse case.
Dirty/tarnished chipram contacts can also cause this(if in a A4000)
Check the power supply for proper +5/+12 voltage under load also.Do not check them unloaded as some suggest as they need a basic load to regulate properly.
Accelerators tend to work out of the fast slot on occasion if you are not using standoffs with screws. re-seating the accelerator and make sure its holding well on the pins might help
Mech