I really do not know where the issue is actually located. I have Sony Ericsson Xperia X10 with me and I have Android 2.1 installed in there. Now the thing that I actually want to know is why I cannot have the YouTube videos to be played on the Sony Ericsson Xperia X10. I have seen that this issue is seen when I have made the update on the cell phone. I had recently installed Android 2.1 and after that I have seen the issue rising here in my case.