But to summarise, I'm not sure if I have an infection or not. I am using avast antivirus, on mac osx 10.8 (mountain lion?).
A while back I visited a website which my webshield flagged as having an infection. Since then I still get occasional pop ups where the webshield blocks the URL... even though I am not actually visiting the website in question.
When I do a system system scan, it does not come up with an infection but a possible warning about a file called bootloader (I believe, this warning may just be a false positive)
I've attached some of the webshield logs, the log of a system scan, and an example of the popup alerts I get.
I actually haven't had any alerts in the last two days... but do I have an infection and if so how should I go about removing it?