Problems with Broadcom's wireless driver

root@acer-willy ~ # uname -r
3.5.3-willy
root@acer-willy ~ # dmesg | grep wl:
[  129.007745] wl: module license 'unspecified' taints kernel.
[  129.011001] wl: Unknown symbol lib80211_get_crypto_ops (err 0)

root@acer-willy ~ # insmod /lib/modules/`uname -r`/kernel/drivers/net/wireless/wl.ko
Error: could not insert module /lib/modules/3.5.3/kernel/drivers/net/wireless/wl.ko: Unknown symbol in module

root@acer-willy ~ # modprobe wl
libkmod: ERROR ../libkmod/libkmod-module.c:791 kmod_module_insert_module: could not find module by name='wl'
ERROR: could not insert 'wl': Function not implemented
libkmod: ERROR ../libkmod/libkmod-module.c:925 command_do: Error running install command for wl
ERROR: could not insert 'wl': Operation not permitted