I agree with SirDice, it is not wise to publish logs without at least masking your IP address (even notepad has find/replase feature)

I am not in position to give you much information but I can give you some leads.

First, you have to learn what port is used for what.
here you can find list of ports used by aplicatons and known troyans
http://lists.gpick.com/portlist/portlist.htm

then you should check if you have any trafic on ports that shouldn't been opened

Inbound traffic is what is coming from outside. It could reveal possible attack or scan (one IP is trieng to connect on multiple ports usualy mean that someone is scaning for opened ports)

Outbound traffic is what is coming out of your box. It could reveal possible troyan.

Other maybie can give you more tips...