This is driving me crazy. I've only a 1mbit connection, so I frequently used to pre-buffer as much as possible of a video. And I could watch the video without hitches and pauses at a good quality as it was already downloaded.

Moreover, the little that is prebuffered seems to behave oddly, you skip forward well within the indicated area that have been buffered, yet the player seems to reset and start re-downloading that part -> unueably slow.