We have a situation here where sometimes a user goes to hatch some linework and poof there is goes. We also have times when a user goes to change properties of some entities and poof, there sit's your desktop.
Change properties like layers where they grip the entities and then go to the layer pull-down. I myself set to current layer then match to current layer and I won't get that problem. I tell them don't do it that way but do they listen... It can be predictable and several times I have threatened to psot the drawings here to see if others get the same poof...
Pieter