root@ubuntu:~# apt-get --reinstall install bcmwl-kernel-source
Reading package lists... Done
Building dependency tree
Reading state information... Done
0 upgraded, 0 newly installed, 1 reinstalled, 0 to remove and 37 not upgraded.
1 not fully installed or removed.
After this operation, 0 B of additional disk space will be used.
Setting up bcmwl-kernel-source (5.100.82.38+bdcom-0ubuntu4) ...
Removing old bcmwl-5.100.82.38+bdcom DKMS files...

-------- Uninstall Beginning --------
Module: bcmwl
Version: 5.100.82.38+bdcom
Kernel: 3.0.0-12-generic (x86_64)
-------------------------------------

Status: This module version was INACTIVE for this kernel.
depmod........(bad exit status: 135)

DKMS: uninstall Completed.

------------------------------
Deleting module version: 5.100.82.38+bdcom
completely from the DKMS tree.
------------------------------
Done.
Loading new bcmwl-5.100.82.38+bdcom DKMS files...
First Installation: checking all kernels...
Building only for 3.0.0-12-generic
Building for architecture x86_64
Building initial module for 3.0.0-12-generic
Done.

wl:
Running module version sanity check.
- Original module
- No original module exists within this kernel
- Installation
- Installing to /lib/modules/3.0.0-12-generic/updates/dkms/

depmod........(bad exit status: 135)

-------- Uninstall Beginning --------
Module: bcmwl
Version: 5.100.82.38+bdcom
Kernel: 3.0.0-12-generic (x86_64)
-------------------------------------

Status: Before uninstall, this module version was ACTIVE on this kernel.

wl.ko:
- Uninstallation
- Deleting from: /lib/modules/3.0.0-12-generic/updates/dkms/
- Original module
- No original module was found for this module on this kernel.
- Use the dkms install command to reinstall any previous module version.

depmod........(bad exit status: 135)

DKMS: uninstall Completed.
Error! Problems with depmod detected. Automatically uninstalling this module.
DKMS: Install Failed (depmod problems). Module rolled back to built state.
dpkg: error processing bcmwl-kernel-source (--configure):
subprocess installed post-installation script returned error exit status 6
Errors were encountered while processing:
bcmwl-kernel-source
E: Sub-process /usr/bin/dpkg returned an error code (1)