DVD+RW -- 1st burn great, 2nd burn freezes

Using Sony DVD+RW 1x-4x disks with Windows Media Center software on Dell XPS 410 computer, I can burn TV shows to disk and first time plays perfectly in Sony DVD/VCR combo player.

After using Media Center to erase the disk, I burn another TV show to it. This 2nd one will play in the Sony DVD/VCR combo player, but will occasionally freeze on various frames, before continuing.

This is all new to me and I don’t know how to fix this – same thing has happened on 3 disks in a row. What can I do to stop the freezing?