On a Sony Vaio VPCEG, bluetooth is not working properly:

• The gnome-shell bluetooth indicator (at the main bar) shows the bluetooth is on, but when I try to switch visibility on it simply doesn't turn on.

• When I open the bluetooth configuration dialog, the on/off indicator shows me the bluetooth is off. And when I try to turn it on it simply does not turn on.

The following is outputted by lsusb command:

Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 001 Device 003: ID 0c45:64be Microdia 
Bus 001 Device 004: ID 0489:e027 Foxconn / Hon Hai
Bus 002 Device 014: ID 4971:ce22 SimpleTech

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Update: Output from rfkill list:

0: phy0: Wireless LAN
    Soft blocked: no
    Hard blocked: no
1: sony-wifi: Wireless LAN
    Soft blocked: no
    Hard blocked: no
2: sony-bluetooth: Bluetooth
    Soft blocked: no
    Hard blocked: no
3: hci0: Bluetooth
    Soft blocked: no
    Hard blocked: no

What should I do to really activate the bluetooth?