i have a sony dru-710a that takes around 7hrs to burn an hour and 30 minute movie. which there is absolutely no solution or explanation for... my specs are good 512 ram/2.8gh-p4/80gb HD. my dvds just the other day started taking 7 to around 10 hours to burn. for reasons i dont know maybe someone could help me with. the media is fine and the files are AVI files which i know takes longer but 10 hours is rediculous. and now the past 3 movies i burnt the screen jumps up and down when i play the movie. the media plays fine on my computer. Can someone please help me with my LONG!!! burning times and also my screen shaking up and down problem?