?? concerning DVD-r on stand alone

Ok here we go I have been all over this site this morning, yes its about 745 am here too early ...anyway to the point...here we go

I have been burning DVD-r (PRODISK 4x)using DVDLab
for a couple of months now with no problems (burned over 50 disks, no coasters) but lately for some
reason, SOME of my movies are freezing for like a
split second, not real bad but annoying.
(FYI these are all avi's and mpeg2's converted
to DVD files using WinAvi) I have checked the
source file its great, checked the VOB files
in Power DVD the are great, checked the VOB files after compliling in DVDLab also great, also checked the burned DVD in my computer player, and it plays fine NO freezing or skipping....I am kinda thinking its my Stand alone player its a cyberhome, like I
said it has been working fine for 2 months but
lately it started doing this...has anyone else experienced this? Also is this something that can
be fixed somehow? I have used a CD/DVD cleaning
disk in it...or do i just have to replace it, I
have only had it about 4 months....Anyway I would
love any help I can get on this....

Thank You again you guys are all great here...