[Discuss-gnuradio] Get only noise when trying to receive fm radio stations

[no]

I'm having some trouble using gnuradio with the USRP. I went through all the 
install steps on Ubuntu 9.04 correctly and set up the USRP with the BasicRX 
daughterboard connected to one of the antennas provided. Then I ran the 
usrp_wfm_rcv.py example as a test, but when I scan for radio stations I get an 
almost constant line with no peaks and the sound is always static noise. I 
can't seem to receive any fm radio stations, does anyone know what the problem 
is?