What edition of Windows 7 are you running : Starter, Home Premium, Professional, Ultimate or Entreprise ?
What was your last known malware infection ?
I'm also confused on your current UAC status. If it's really disabled, why ?
Also, is your "Deepscan" on "On-demand scanners" the deepscan from ESET ? What edition (package) of ESET are you running ?
I strongly suggest you to install a real On-demand scanner (Antimalware mostly) like Malwarebytes, maybe HitmanPro.
Also, as plugins, I would ad AdBlockers (like AdBlock or AdBlock Plus), WOT, HTTPSEverywhere, Ghostery, etc.