As far as obtaining viruses, I can't really help you as I don't really have much luck in receiving any.
I am very careful of clicking ads, even on trusted sites (which are the only ones I visit) . One thing I am currently looking in to is the Windows 'hosts' file which apparently controls that aspect of surfing-but thats another topic and I am in the learning process. You say Malware found another Trojan, but I don't see it in your log. I strogly recommend removing AVG from your system (at least disable it temporarily) and do a complete system virus scan with Avast. Most techs will back me up with this, and I can also say it's much better, I used to use AVG, until I received recommendations for Avast. They don't even compare.
Summary:
Do virus scan (Avast)
It also wouldn't hurt to do an error check of your HDD (Right click c:\, properties, tools, error checking).
Run 'ccleaner' (you haven't mentioned doing that).
Do another Malware Bytes and Super AntiSPyware full scan.
See what you come up wiith after that. When all this is completed successfully, you should notice a huge difference
