Does Runner have to 're-touch' base every pitch??!!

Krak,

No, you're not losing your memory. Maybe the ump is.

There is no requirement for runners to retouch after every pitch. It may be a softball rule since runners can't leave the bag until the ball leaves the pitcher's hand.

The only requirement to retouch is after a foul ball (ball is dead) and the umpire isn't supposed to put the ball back in play after a foul ball until all runners have retouched their bases. Generally, if the runner returns to the vicinity of the bag it's all good.

Pilsner is right, only on a foul ball is it mandatory to retouch the base.