Explain the odd behavior of this wireless connection

[WhoIam]

There's an open wireless connection I use occasionally. I don't want to get into the ethics of this, but I will say I use it only for poker and casual internet browsing. After using it for a while, at a random time I will no longer be able to access the web but Full Tilt will continue to work as long as I want. If I restart the computer or reconnect to the network, neither will connect. Why does this happen and is there anything I can do to avoid it or fix it when it happens?

[PLOlover]

probably dns just put your dns server to 4.2.2.1 , 4.2.2.2 and bypass whatever isp dns server it has.