I have windows 7 on my computer, I got on my xbox 360 and setup the windows media center app on it about 4 monthes ago. I didn't have many problems at first for about a month. I always used it for movies and videos. The problems started slow at first a video might lag a little bit and buffer a couple of times, but I would restart my xbox 360 and it seemed to fix the problem until the next time. Now I have gotten to the point where everytime I exit windows media center or turn off my computer or xbox, I literally have to uninstall the xbox extender everytime and reinstall just to watch movies and videos, because if I don't, I will have an error saying the xbox can't find my pc and when I get on my pc wmc and go to the extender page it shows the xbox but says and don't guote me dont know for sure but it says something like xbox available but not ready or something like that. It will also have the yellow yield sign looking deal. Anyways when I uninstall and resetup wmc for the xbox it will work again only when I go to watch my videos in the videos section it lags real bad and during the video it wont say buffering but it acts like it is. It will almost like pause for a few seconds then play for a few seconds and continue to do so the whole time, very aggrivating, please help. THANK YOU, get back to me asap.