My systems options keep reverting. Specifically, under selection I want to be able to select hidden edges when in wireframe mode. I have founds that this selection gets unchecked every day. Not from session-to-session, but from day-to-day. In a conversation with my VAR yesterday, he said this should not be happening, but didn't indicate whether it had been identified yet as a bug.
This also shows up in drawings when trying to dimension hidden lines. When that box gets imchecked-that ability to dimension is also lost.
Win2000 ; nvidia quadrofx1100.
jk