Check your swaybar end-links...they could be loose or shot. If they're loose/shot, they'll make a single loud clicking/popping sound under hard cornering or going over speedbumps/driveways (when one wheel hits the bump before the other). Track driving makes them fail faster. Aside from the clicking/popping there should be no other negative sensations. Check your other suspension bolts while you're at it too.
I had this on my other cars after upgrading the swaybars, and endlinks were always at fault. But they can fail with stock sway bars too.