3 hours? using nero, medyo matagal. sa akin mga 1hour something lang (at most siguro 2hours). pero for dvd movie to sya, including conversion
dvd backup lang? USB ba connected yung dvd writer mo (you said external)? if yes, then it would explain the 3hours. dapat dyan at least mga two connections sa usb para more power. kinukulang yan sa power kaya ang tagal magtransfer ng data