Headphones Jack - Radio Weird Problem

I think my Sansa Clip 4GB silve v.1 is defective.

The radio screen will come up i can scan forward and reverse the frequencies. but when i do this it will become non responsive or sometimes it unfreezes and i can hear the radio…

i formated the clip, reset to factory settings etc and now i have another problem! when i walk with the clip on on my waist e.g. the radio will stop playing,

if i try to unplug the DDDDD==o audio jack i have sound again… wtf? i am puzzled, should i return it?:robotmad: