You don't have a network connection as yet, your output should look similar to the one that is shown below.
If you are still having problems, I would suggest that you remove b43-fwcutter and also the file in b43 in /lib/firmware/2.6.24-16-generic and reboot and then start again, as it seems likely that there problems with the installation.
lo no wireless extensions.
eth0 no wireless extensions.
wmaster0 no wireless extensions.
wlan0 IEEE 802.11g ESSID:"Home"
Mode:Managed Frequency:2.437 GHz Access Point: 00:1B:11:90:8C:52
Bit Rate=54 Mb/s Tx-Power=27 dBm
Retry min limit:7 RTS thr:off Fragment thr=2346 B
Link Quality=69/100 Signal level=-72 dBm Noise level=-68 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0
You could also try doing the following in your second attempt, after you have installed the firmware and see if that helps:
sudo modprobe -r b43
sudo modprobe b43