Problems with youtube app

I got the 3g about a week ago. Over the past few days I've started to have some problems with youtube. Sometimes I'll click on the video, then it will go to the loading screen and just say "loading" forever and not actually play. Sometimes it will stop loading about halfway through the video. Then when I go back to the video page where it shows the info of the video you selected, the whole page will freeze and I won't be able to click anything. Usually it eventually catches up and starts working, but sometimes I'll have to completely turn off the iPhone and then turn it back on. It has happened both on 3G as well as wifi. I have updated the software, if that matters. The internet browser also did this once.

Are these problems normal?

 

humans