Thanks for sharing your configuration! Setting your UAC to "always" makes me smile.
Your system looks clean & very uncluttered.
Were you
infected because of testing? Some helpful security add-ons for Firefox are
Adblock Plus, NoScript, HTTPS Everywhere, Lastpass (secure encrypted password management), &
SelfDestructing Cookies, while for Chrome I've used
Adblock, ScriptBlock, HTTPS Everywhere (Beta release), &
Lastpass. I also use
Ghostery with both Firefox & Chrome! Finally, you can't go wrong with Sandboxie!
www.sandboxie.com