2940 2.0.32 and odd behaviour

[Jason Venner]

I recently did a major upgrade on my 2.0.24 linux box.
I went from a P150 to a k6-200 and 2.0.24 to 2.0.32

I now have some very odd disk behaviour. Disk IO seems slower, and
tasks seem to run at variable speeds.
for instance, I like to play xboing, it used to be very smooth, now
the ball slows down and speeds up as it goes.

It is very odd. I did enable tagged queuing and SCB paging.

Is this unrelated to my disks?