60D half-way button will shoot inmediatly

[KillingEmo]

I realize that this is a little old, but I recently had the same problem with my t2i (I'm poor lol). I had the problem while shooting on Jan 22, 2014 while shooting outdoors and it was 0°F outside. I've tried several experiments indoors and out and came to the conclusion that it only happens in very low temperatures. I noticed that you posted in March last year, maybe the same problem?