OK, TMT, sorry to waste your time. I didn't give you the complete setup. In addition to the keltner channel I was using the adxvma separately as the centre line. I thought it was one in the same indicator. It appears there is no memory leak with the adxvma keltners, but the leak may be associate with the adxvma itself, when applied indepently and seaparetly. I am watching now, does not appear to be leaking but will let you update when I know for sure.... thanks again