Using Firefox 12 at home, Internet Explorer 8 at my alternate location. The problem I'm having happens at both locations, so I believe it's something with Youtube, not the browser or system I'm using at either location.
The problem is that paused videos will not load past a certain point. They consistently will only load to about 45 seconds ahead of where it is paused and will not start loading again until the video is unpaused. This is a problem if the video is loading slower than it plays. That is, for example, 5 seconds of video taking more than 5 seconds to load. Is there anything I can do to fix this?