opera or google chrome are great!
if you have any kind of adblock software running, try disabling it
youtube doesn't like when you try to block their ads
I downloaded firefox, updated my flash driver, and screwed with my ad/popup blocker and it is loading sparatically... Sometimes it loads fast sometimes not at all. I'm beginning to think it is COX...
there's advertisements when you play videos now so you have to watch a 15-30 second ad to watch your youtube video
most adblock software attempts to block those ads and it causes the video not to play at all