I think my experience has mirrored the OPs. The last month or so I have noticed a dramatic decrease in reliability. Several LAX<->SFO delays when others were flying on schedule. LAS-LAX recently was delayed 5 hours...I bailed for WN two hours into that one. Most recently, had AUS-LAX that arrived 25 minutes early, but then sat on the tarmac for 80 minutes waiting for a gate. Really poor performance on AA's part...hopefully it gets better soon. I have a busy summer in store.