recently bought that 812s external dvd burner. so far ive only burned 1 cd successfully only because i left it on all night to burn. it took 10 hours and 45 mins to burn a 2.3 gig dvd. i have a memorex external dvd burner too. the memorex burner worked fine for about 5 dvdr's then after that it started burning slow, but i thought it was just the burner so thats when i got the liteon one. Now i have 2 practically new dvd burners that dont work right. im using a usb 2.0 card and nero 6. Any help would be greatly appreciated