Default [Q] Problem with Wi-Fi

I'm a user of LG P920. Previously I had Neo V. On LG i have only one little problem. This is problem with Wi-Fi. When I use Andchat, WiFi connection is sometime breaking. And Andchat gives the message:"Disconnected: recvfrom failed:ETIMEDOUT (Connection timed out)". What can i do, to eliminate this problem?
Thank for help!