No offense, but you didn't had to install GrimeFighter or SafePrice.
If you did a custom install you could have deselected them.
Or after install, removed them.
No, avast has no adware build in.
If you believe safeprice is adware, you don't know what adware is.
The interface is still simple, just renewed because of changes in the application.
As far as the firewall, never use two.
You should have disabled the windows one or not use the avast one.
If it broke your network, why didn't you asked for help here?
I'm sure we would have helped you solving the problem.
Don't use MS security essentials, even MS itself says not to use it.