I am a newbie to Ubuntu, and loving it except for this AdHoc issue which has been bugging me for a month. I have found numerous posts on the issue with no real solutions, so let me be a bit more specific regarding the issue, and hopefully someone can help me out.

I have a Broadcom Driver on a Dell Inspiron and the Wifi works great. The AdHoc works on a parallel installation of Windows 7, so that should mean the card supports AdHoc. My friends laptop running 11.10 is able to connect to the network via Adhoc with no issues, hence the network is setup right.
Of the many things i have tried so far, I got the ndiswrapper, tried all possible configurations (manual configuration) in network manager, even tried the wicd manager

The latest breakthrough was when I tried sudo iwconfig wlan0 mode ad-hoc

Error for wireless request "Set Mode" (8B06) :

    SET failed on device wlan0 ; Operation not supported.

so i tried iwconfig wlan0 and got

wlan0     IEEE 802.11bgn  ESSID:off/any  

          Mode:Managed  Access Point: Not-Associated   Tx-Power=19 dBm   

          Retry  long limit:7   RTS thr:off   Fragment thr:off

          Power Management:off

So the Mode is forced to Managed instead of Ad-Hoc

So, where do I go from here?

Additional Information:

The output for sudo lshw -C network is

  *-network               

       description: Wireless interface

       product: BCM4313 802.11b/g/n Wireless LAN Controller

       vendor: Broadcom Corporation

       physical id: 0

       bus info: pci@0000:03:00.0

       logical name: wlan0

       version: 01

       serial: 70:f1:a1:89:e7:1a

       width: 64 bits

       clock: 33MHz

       capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless

       configuration: broadcast=yes driver=brcmsmac driverversion=3.0.0-17-generic firmware=N/A ip=192.168.1.2 latency=0 link=yes multicast=yes wireless=IEEE 802.11bgn

       resources: irq:17 memory:f0500000-f0503fff

  *-network

       description: Ethernet interface

       product: AR8152 v1.1 Fast Ethernet

       vendor: Atheros Communications

       physical id: 0

       bus info: pci@0000:04:00.0

       logical name: eth0

       version: c1

       serial: b8:ac:6f:65:e4:3e

       capacity: 100Mbit/s

       width: 64 bits

       clock: 33MHz

       capabilities: pm msi pciexpress vpd bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd autonegotiation

       configuration: autonegotiation=on broadcast=yes driver=atl1c driverversion=1.0.1.0-NAPI firmware=N/A latency=0 link=no multicast=yes port=twisted pair

       resources: irq:43 memory:f0400000-f043ffff ioport:2000(size=128)