I have a Compaq Evo Notebook with a DVD-ROM drive and an external USB 2.0 TDK 8x DVD-R,DVD+R, DVD RW writer. Here is what has happened. Using Verbatim 1x-4x DVD-R disks to copy some movies, I find that while the movies seem to be read ok by my notebook drive, they are consistently freezing up. They play fine in the DVD writer. Using more expensive 8x DVD-R media (also by Verbatim), there is no problem with my notebook DVD-ROM playing the movies. My notebook DVD-ROM has gotten heavy use for 1.5-2 years. Is this an indication of wear and tear (aging), inferior media, or possibly both?