Are threads missing?
 

Or let me clarify, I know one I started is missing. I know that it had 2-3 replies today, but it doesn't even show up anymore when I search for threads started by me. I seriously doubt a mod intentionally deleted it, so is there a bug, or what?

Looking into it.....
 

what may have happened is the thread was merged with an older thread on the same topic - I've sent you a PM for more details - and will try to sort this out.