I flew to Pittsburgh last weekend (and no, I don't want to talk about last night Steelers' game).
I flew United to Las Vegas McCarran, then transferred to my usual airline. I had an hour and a half layover, but I skipped the slots in Las Vegas.
My checked bag didn't make it. And that's not so rare apparently. Out of the 8 people I talked to who flew to Pittsburgh from California this weekend, 4 lost their luggage. One lost her luggage on a direct flight!
I got my bag 18 hours after landing, so that worked - but I can't find any news about a recent surge in lost luggage. I assume it might be due to more people checking bags due to the new TSA rules. It might just be noise - but it sure is strange.