This is my first post on here. I bought my 40D about a year and a half ago and only used it a handful of times before crapping out on me in April. I sent it to Canon and $280 later they had repaired my mirror box assembly. I took it out for a test shoot with a new lens I had just bought and everything worked fine. Well...this week me and my wife will be leaving for a road trip through Oregon, Idaho, Wyoming, and Colorado with the primary purpose of our trip being pictures! Thank God I decided to fiddle with my 40D yesterday because the same problem it had before has come up again. The mirror gets stuck in the up position and shuts off power. Funny thing is that it only does this when I have a lens inserted. It works fine when I fire it with no lens installed. Needless to say I called and yelled at Canon and demanded a new camera, but they said they will only repair it...again! So I had to go out and buy a new 30D at Wolf for the trip this week. Just curious if anyone knew of quality issues with the 40D. I may just end up selling it and keeping the 30D.