Eset 4.0 installed, visited a few risky sites, a few hours later Windows Security Center window came up listing 13 critical (all sorts of backdoors, keyloggers, trojans, worms etc), 2 mid level threats & 1 mild. MSFT Security Center requires entering the OS REGISTRATION NUMBER w/ assoc e-mail to it get going again which of course I do not have, neither does the tekkie. So I guess this 3 month old HD has had a shorter than expected life & can rest in peace forever. Unfortunately I didn't copy the list of intruders so cannot name names, though I remember the name ILLUSION in there which is the computer name the shop uses to install new systems. On a few occasions I took the machine in for service after OS installation I was greeted by the question from the tekkie: "Virus"? Strange. Question is what good is ESET if it allows 16 viruses to install in one swoop? Downloaded KASPERSKY on another machine & it stalled during installation shutting the machine down so pass on that. Re-installed ESET which informed the Kaspersky installation was suspended with no way to uninstall the failed install. ha. I had noticed a couple of month ago the fan regularly speeding up to cool the CPU with high temperature readings & 100% CPU usage for periods of 1/2 hour or so but no clues in the PROCESSES section in Task Manager. This made navigation slow, keyboard lag, clunky scrolling, slow to impossible internet etc for several months. Fix was to exit Firefox, temp relief only of course & resetting the router box. Regular ESET scans showed no infection. Internet connection is public wifi with zero security other than my feeble password. I guess any number of people can log on whenever they want. In a word, Screwed. I'd be very interested in your comments. Cheers and thanks to the forum.