Originally Posted by alpha_bravo

I'm glad to hear I'm not the only one... This is happening to me as well on my '09 with 105 (standard 105 crankset). If I apply any power at all shifting from big chainring to small, it's a guaranteed Andy Schleck. I've changed the cable tension and taken it to my wrench who's more than capable, no dice. Short term fix has been a K-Edge chain catcher, long term is a swap to Rival.