Only for a few hours
I am not a fan but it helped one of my old PC run smooth
http://www.bitsum.com/pl_gotd.php
Also http://www.giveawayoftheday.com/process-lasso-38/?utm_source=feedburner&utm_medium=email&utm_campaign=Feed%3A+giveawayoftheday%2Ffeed+(Giveaway+of+the+Day)