My S* is gradually getting weirder and more broken. **I run an intel core I* and **gb o...

My S* is gradually getting weirder and more broken. **I run an intel core I* and **gb of RAM this hasnt been an issue for the last year. Only now.***) The headphone*cue output began lagging significantly behind the master output. By around a *** of a second.***) (* week later) The headphone*cue output then began playing only out of the left side. sometimes it switched back to right if i moved the jack.***) Now: the Master Level does asjust the output volume, but doesn't change the level on the screen in Traktor.***) AND NOW no matter what i do when i cue a track it isn't in time. For a while i thought i was having an awful week of mixing, but NO, i can count tempo. Something strange is happening. I don't know if its hardware or software or both. But none of it makes any logical sense to me. HOW IS THE CUE JACK LAGGING BEHIND THE MASTER? Aren't they running off the same soundcard? I don't expect to get this fixed as i am out of warranty but can you asnwer my questions just for curiosity's sake?