Wireless connection problems IP 10.0.0.x

Hello,

I'm having a problem with my wireless connection. My laptop connects normaly to wireless AP and it works good then DHCP servers gives ip in format :192.168.1.x, but it doesn't work then the given ip is 10.0.0.x (although it connects to wireless AP normaly, but it can't connect to internet anyway). If I connect to the same network with ethernet it works fine with ip 10.0.0.x. Other computers and devices connects wirelessly to same network normally and have internet.
System     
    Manufacturer:    Dell Inc.
    Model:              Inspiron N5110
    Total amount: of system memory    4,00 GB RAM
    System type:    windows 7, 64-bit operating system
    Number of processor cores:    2

Network:    
    Network Adapter:    Bluetooth Device (Personal Area Network)
    Network Adapter:    Realtek PCIe FE Family Controller
    Network Adapter:    Intel(R) Centrino(R) Wireless-N 1030
    Network Adapter:   Microsoft Virtual WiFi Miniport Adapter
    Network Adapter:    Microsoft Virtual WiFi Miniport Adapter

            All adapters are set to obtain IP and DNS automatically.
Windows and dell utilities shows that wireless adapter works fine. Updating drivers had no effect.

Can anyone help with this problem?