I have had some trouble with sluggish performance on daughters laptop (Celeron 900, 512 Ram). Avast detects a virus free system. Ad-Aware picks up nothing, infact it comes back with 0 resutls which is odd cause it normally picks up at least tracking cookies. Another Forum mentioned I may have a Rootkit on this system. What is the likelyhood of this and will Avast detect Rootkits?? Thanks for your help and input!!