Comment 1 for bug 86980

Exactly same problem & results for me, with Belkin's F5D7050B device. Usb id is 050d:705a.
It worked fine with the legacy rt73 driver from previous kernels.
But not with rt73usb that came with the latest kernel update (2.6.20-11-generic).

lsmod reports the following drivers:
rt2500usb 30592 0
rt73usb 33536 0
rt2x00lib 11904 2 rt2500usb,rt73usb
usbcore 134280 5 rt2500usb,rt73usb,ehci_hcd,uhci_hcd

iwconfig reports:
lo no wireless extensions.
eth0 no wireless extensions.
wmaster0 IEEE 802.11g Frequency:2.412 GHz
          RTS thr:off Fragment thr=2346 B
wlan0 IEEE 802.11g ESSID:""
          Mode:Managed Frequency:2.412 GHz Access Point: Not-Associated
          RTS thr:off Fragment thr=2346 B
          Encryption key:off
          Link Quality:0 Signal level:0 Noise level:0
          Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
          Tx excessive retries:0 Invalid misc:0 Missed beacon:0