Stainless or blued gun? Up until the one I have now mine were blued 10/22s, and I never had a problem. My current 10/22 is the stainless model with the full stock. I too had problems with jamming (still do occasionally), but most of it seemed to clear up when I took it ALL apart, and thoroughly cleaned it.
Also, if you haven't tried it already, you might want to try using a few different brands/types of 22LR ammo. They can be picky at times.
You might also want to check out the Remfire Central forum for more info. on 10/22.
Link: http://www.rimfirecentral.com/forums/