Occasionally the odd crack when turning or bending it, I can't remember if the sound/feeling is more pop or click like.
I'm 26, I weigh 165, and it doesn't tend to hurt at specific times really.. It doesn't keep me up at night or anything.
The pain would be mostly in he back of the knee , on the outer half of my knee, and occasionally a little dull pain above my kneecap in front
Never Summer Evo 153/Restricted ReFlex Cartel
Gnu Danny Kass 156 BTX