20D PROBLEM,only would happen at work

While I was working, (coulnd't happen anywhere else),and the 20D locked up, the shutter would not fire.The 20D would focus though , the battery grip was on..It would not show how many pics were left. I changed cards, same... I then turned the camera off and on...same....Took of the lens...same response...I was puzzled, etc. I went up to a photographer at the game, he tried the same, then he gave it a shot of taking the batteries out....waited 10 sec, then tried again, it worked...Then another problem, I got the ERR Sign....Now I'm ready to go, it works, I fired a couple of shots, then it happened again . I took out the battery, waited 10 seconds.. it workds again.....what A funky camera, I guees I can't rely on it if I buy it .....Does anyone know what the problem was?????????

Bad grip. An extremely well known problem. Call Canon. They'll replace it.

Also check which onboard software version is loaded?

the onboard software is Ver. 1.0 hmm...thanks for your help guys. I'll tell my boss when he picks it up..Thank-God there were other photographers there otherwise I would of been screwed, I think I need a back up body (by the way, they had the 70-200mm 2.8 IS and looked sharp, sticked out..hmm 2months untill i get one )anyway...thanks again for the help...you should of seen me

I saw this problem on mine from time to time, once every 3 to 4 months, and was told by Canon UK that there is an IS 'issue' (this has also been mentioned on this forum) with the 70-200f2.8L lense. However, since upgrading to v2.02 firmware I havent seen the problem again! BG-E2, just got back from Canon repair, usually shuts camera down with a flashing 'empty' battery sign even after full charging. See Canon 20D service notice on Canon US www.

Hope this helps.