(1) lspci -vvnn:
02:00.0 Network controller [0280]: Broadcom Corporation BCM4318 [AirForce One 54g] 802.11g Wireless LAN Controller [14e4:4318] (rev 02)

lshw -C network:
  *-network
       description: Network controller
       product: BCM4318 [AirForce One 54g] 802.11g Wireless LAN Controller
       vendor: Broadcom Corporation
       physical id: 0
       bus info: pci@0000:02:00.0
       version: 02
       width: 32 bits
       clock: 33MHz
       capabilities: bus_master
       configuration: driver=b43-pci-bridge latency=64
       resources: irq:11 memory:5c000000-5c001fff
  *-network
       description: Wireless interface
       physical id: 1
       logical name: wlan0
       serial: 00:1c:df:4f:fe:15
       capabilities: ethernet physical wireless
       configuration: broadcast=yes driver=b43 driverversion=2.6.35-22-generic firmware=N/A ip=192.168.0.66 multicast=yes wireless=IEEE 802.11bg

(2) lsmod|grep b43:
  *-network
       description: Network controller
       product: BCM4318 [AirForce One 54g] 802.11g Wireless LAN Controller
       vendor: Broadcom Corporation
       physical id: 0
       bus info: pci@0000:02:00.0
       version: 02
       width: 32 bits
       clock: 33MHz
       capabilities: bus_master
       configuration: driver=b43-pci-bridge latency=64
       resources: irq:11 memory:5c000000-5c001fff
  *-network
       description: Wireless interface
       physical id: 1
       logical name: wlan0
       serial: 00:1c:df:4f:fe:15
       capabilities: ethernet physical wireless
       configuration: broadcast=yes driver=b43 driverversion=2.6.35-22-generic firmware=N/A ip=192.168.0.66 multicast=yes wireless=IEEE 802.11bg

(3) lsmod | grep 43:
43                   168681  0 
ssb                    39288  1 b43
mac80211              231541  1 b43
cfg80211              144470  2 b43,mac80211
led_class               2633  2 b43,fujitsu_laptop

(4) ndiswrapper is NOT installed.

(5) cat /etc/modprobe.d/blacklist.conf
# replaced by b43 and ssb.
blacklist bcm43xx

(6) iwconfig
lo        no wireless extensions.

eth0      no wireless extensions.

wlan0     IEEE 802.11bg  ESSID:"TROY"  
          Mode:Managed  Frequency:2.412 GHz  Access Point: 00:1F:B3:68:66:A1   
          Bit Rate=24 Mb/s   Tx-Power=27 dBm   
          Retry  long limit:7   RTS thr:off   Fragment thr:off
          Power Management:off
          Link Quality=49/70  Signal level=-61 dBm  
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:0   Missed beacon:0