Hi everyone, first time poster. Had a SP1 that I recently sold, and picked up my SP2 yesterday. When I've got my headphones plugged, and even when its just on speakers only, there is a background static/hissing noise coming from the speakers (I can hear even when volume level is at 2 with headphones, and when I turn it up to around 70 I start to easily hear it when it's just the speakers). I know that all computers emit a very quiet "whine" when they operate, but this is different because the hissing stops when I hit mute. I need to know if this is a software issue that will be patched up, or if this is a hardware problem unique to my SP2 and I will need to do a return/exchange. Also, I should note that I have installed all the new updates. Not sure if this was happening when it was fresh out of the box or not. Please let me know your thoughts.