As soon as I installed this version, I began to have numerous problems. DVDs were not recognized, read errors occurred on discs known to be good, software relying on AnyDVD hung. When I uninstalled the update and re-installed a prior version, all these problems went away. My system is not unique, P4, Windows XP Pro, NEC 3540A drive updated to fw 1.04. Is anyone else having similar problems?