</font><font color="blueclass=small">( For what it's worth, I have run a Stihl 026 Pro (the current model of same saw is MS 260 Pro) for years and never encounterd the same problem you are having. I have cut many trees that were really too large for this saw. I took my time, used good cutting techniques, and only once got the saw stuck (I mean REALLY stuck!). I had to use steel wedge and sledge hammer to loosen it on that occasion, but even then no bent chain. I have never had the chain come off either. I do check the tension often and keep it oiled well. Sorry for your misfortune. Have you talked to the shop where you purchased it and had them check it out? )</font>
I haven't talked to the dealer yet. I wanted to get other's feedback first from here. I am fairly new at using a chain saw and figured it might be me. I have a feeling it has something to do with the "quick tensioner" system, which is essentially a plastic flip out "wingnut" that you can turn to loosen the cover, then use a plastic gear to tight it up. It does work pretty slick, but I think it doesn't do a very good job of holding the chain against the inner face of the machine, allowing movement back and forth across the plane of the bar grooves, so that with just a little slackness (I do not mean sagging), it doesn't take much to pop it off the bar.
Since it is only two weeks old, I may bring it in this coming weekend, and see what they say. I'd rather give up the quick tensioner if it meant more stability, and fewer chains. Like I said in my original post, I've gone through 3 bent chains in two weeks. I never had this happen all of last year with my other chain saw.