I have now finished my trial with Eset Antivirus and Antispyware Nod 32. I am going to buy the product but is it worth moving up to the Eset Smart package. The difference in cost is nothing but not having tried the smart one does it operate differently. I have just read a thread about it slowing someones PC down and whilst I accept that can be caused by a number of problems I had a very bad experience with PC Doctor a while ago and do not want any slowing of my PC. ANy help or advice would be appreciated . Just for the info I had AVG installed before which alerted me to a virus then politely let it through with its rootkit and Trojan . It took me two days get my sytem back together . Eset was the only program that would install with the memory based virus running, AVG would not run and it refused to do a full re-install while the virus was there. I contacted AVG and was told it was rare event but most virus engines would not have protected me .