I still got some strange WIRED connection issue.
I can bring up my card, I get proper network settings via DHCP.
I can ping my gateway as well as webservers (like www.google.pl by their names ie. ping www.google.pl), but the browser can't connect to anything.
Funny that MyTube can search files but with no effect when trying to download them.
Skype can connect without any glitches.
E-mail nor browser - can't.

First I wondered if it's because of my possible messy config but then I've flashed (IFR after 2ssu upgrade), upgraded and installed dbus-scripts as well as usblan on completely fresh system.
All the same.
I admit - I have only one network to test my lan connection but I doubt that's the source of the problem (computers work normally in this network using dhcp).