SolidEdge and stability

My apologies in advance to Ken.
Well the Computer Graphics class is back in full swing. The SolidEdge
mothership wasn't able to deliver a new student version of their latest
product in time for the IT department to make the images for this
semester's classes. So we are still on SE14. However, this probably
doesn't change what went on or would have gone on this evening.
Twelve newbies in a room are struggling learning the concepts of
sketching, constraints and a host of new skills. About a third had
numerous problems with crashes and lost a lot of time. Not surprisingly
these users were also the ones having the hardest time learning to use
SE. And what may have been causing the crashes more than anything else
was that they had not learned to paint within the lines the SE sets
forth for sketching. Hardware can pretty much be ruled out. All the
workstations are identical with identical software installed on them.
The only logical conclusion is that their actions confused the GUI and
it's timers and intent zones and put it into some kind of ambigous
state that caused the software to crash.
Now I'm not digging SE, just making an observation that probably
applies to SW just as much. These problems that were occurring, were to
me unreproducible but frequent. It is not unlikely that SW also suffers
to a certain extent with this type of problem. There seems to be a
certain rythm, for lack of a better word, that some users get into that
seems to avoid the movements and actions that cause problems. And vice
versa, other seem to have a set of actions that seem to precipitate
trouble.