i had that problems to...even on my 3000+ 1gb ram amd..but i found a great anti-virus/spywear..and now i don;t have problems.. the site 9is
www.grisoft.com ...now i don;t have problems anymore( i hope guru will not be upset for postig a site)...and if she/he is...erase my post...
oh and the soft is free to.