Oh? I'm running v1.44 and have no such problems.
Try creating a disk with a large directory, more than two tracks.
Then try to display the directory. On all of the drives that I have
tried, you will hear that little "click/tick" sound indicating that it
tried to step the heads too fast. You will then get a spurious
media failure message. Of course, it is possible that I missed
something in the instructions, but I beat my head against it
for a long time. Then tried the older version where you can
manually set the step delay and volia! No problems.