I know youtube has always varied but it seems like its gotten ridiculously slow this year, most stuff will buffer reasonably quick to start but sometimes after a minute or so it will start buffering again, oddly it doesn't seem to happen as much with popular videos, also another thing that annoys me more is you can forget skipping now without waiting ages for it to load and thats if it ever does again, i can see whether data is being transfered and it just stops more often than not.