The only lens I have is the EF-S 18-55 that came with the camera. If it has
problems with the body then again this is a Canon problem. One would only
expect problems with non Canon lenses because if Canon can't make the
products backwards compatible with their own lenses then they are trully
screwed.

As for the problems try the dpReview forums. There are good number of posts
their with people with the 1.05 firmware still having lock-ups.

John