I'm having issues... That have led to much sadness... My Canon 40D won't turn on. Let me lay it out. Siblings graduations... Taking pictures all last night. Dinner, still taking pictures. At one point during dinner I let me GF use it, she turns it off, it won't turn back on. Nothing happened to it, no drops or random screwing of options. I have tried charging the battery, no go, trying a different battery, no go, cleaning connections on the battery, no go. Talked to Canon, they would like me to ship it in a get an evaluation and an estimate of how much it will take to fix it. So, any suggestion for a fix or ideas of the issue, please let me know. Until then, I shall sit here seaching for the bottom of a bottle and thinking back on the good times me and Mr. 40D had together.