Now this is common knowledge for alot of people, but recently I got bored and started watching episodes of shows online, megavideo is one of the better video hosts, but they have a lame time limit that can trigger anywhere from 15-1.5 hours after you start watching a video, that lasts 54 minutes before you can finish it... It's aggravating as hell.
So here's how you fix it.
Go to start, all programs, find accessories, then open up command prompt.
In command prompt type in Ipconfig /release
Wait about 30 seconds then type in Ipconfig /renew
Your dynamic IP should have changed, you can refresh your browser and continue watching your movie/show.
Like I said this is pretty common knowledge for alot of people, but for those that arn't aware, it's a nice workaround.
This doesn't always work.. for whatever reason sometimes your ip doesn't change for a few tries.. just be patient and give it a little longer before refreshing.