http://www.pcwintech.com/cleanmem
cleanmem setup.exe
you can set it to clean your memory every 5 min if you want. I use it with WGT and it runs constantly when my computer starts up (set this in the options) and it is perfectly safe from any viruses...read about it, how it works and I have no more memory leak problem stays at 350-400 mb ...smooth meter.
update: this link is a direct download from the creator (pcwintech) for those that click on the wrong links