SM-348b audio playback problems

Hi my first post and i know its a subject covered before but alas had provided noe help and im now getting really fed up with my Samsung 348B drive and its only 9 months old.
Basically i can burn disks no problem even play DVD’s and audio disks original and copys, but the audio is skipping and popping etc like a maniac and the video play back is some what inperfect.
I have another drive in my system a tdk 440N but i had it installed with no problems with my Samsung also i have noticed that my samsung is not running with DMA on but my TDK is would this have any thing to do with the problem?
pleeeeeease help anyone!