After upgrading to 1.1.3, my iPhone does this: http://www.youtube.com/watch?v=uNSgKQtER3o
when I try to use YouTube. This problem occurred in firmware versions 1.0.2 to 1.1.1, and was fixed in 1.1.2.

I have tried to copy over the YouTube.app and the VideoDecoder files from 1.1.2, into 1.1.3; however this has failed to solve the problem.

Does anyone have a fix?