I had been running v2 of ML for six months with a T2i with great performance and no bug reports. I recently upgraded to v2.3. Immediately upon upgrading I started noticing that when the camera's power switch is off the battery will start to heat up and get hot and within two hours be dead. I tried two batteries with the same symptoms. I was able to reproduce the symptoms fours times in a row.
I reverted back to the Canon base firmware and the issue cleared up... No more overheating or battery draining. Days later the battery is still full charged in the camera.
I'd like to use ML again and I like v2.3. What can I do to help?