I've done my homework on this a bit already.
Problem: the usual warnings of "Do you want to save?" or "Are you sure you want to delete that? It cannot be undeleted." etc have mysteriously stopped working.
Tools > Options > Edit/Find > Confirm: all boxes are checked
DoCmd.SetWarnings is not ANYWHERE in ANY code of mine. Nonetheless, I threw it in once and set it to TRUE just to be safe. This did not remedy the problem.
This isn't the first bizarre case that's come up. I've had forms just completely die on me. My homework indicated it was "corrupt" and that simply C&P the contents into a new form would do the trick (and it did). I don't know why these things are happening.
The biggest problem right now is that the failsafes have been disabled. Here's an overview, if this helps:
MS Access 2003
Stored on a shared drive
Multiple users access it across multiple computers, though one at a time
Users are very limited (<5)
I really can't suspect that anyone is purposely screwing with this thing, but I can't explain these random occurances. Please help.