I have played from Olympic casino with my notebook when I played off-line tournaments, because Olympic offer free WiFi (wireless) Internet for poker players.
Many from our players also used this offer from Olympic casino and played online games at time of off-line poker tournaments.
I don't know a lot about IP, but may be this is source of our problems?
There is list of local player, who has problems with Full Tilt Poker:
Vladislavs Grebesko
http://www.baltic-poker.com/?id=19&player=637
Juris Osns
http://www.baltic-poker.com/?id=19&player=143
Jegors Cemisovs
http://www.baltic-poker.com/?id=19&player=592
And some other