Hmmn. Things seem to be ok on this browser at the moment (Lunascape6/Gecko) so I'll try and post again. Sophos is still running.
@Carolyn. I did the clean install (and formatted) because I was running a dul boot with Linux Mint and was going through GRUB initially and then into Windows boot loader.
Either this or the fact that I had a custom theme seemed to be preventing SP1 from installing. Also I like to do a clean install once a year.
@Jacee. Thanks, I'll try your suggestion and post the logs as soon as this rootkit scan is finished.