Some time ago I got a new Acer Aspire One that is shipped with the mo WLAN!
The log said:
[ 25.315594] wl: module license 'MIXED/Proprietary' taints kernel. [ 25.322704] Disabling lock debugging due to kernel taint [ 25.337362] wl: Unknown symbol lib80211_get_crypto_ops
The problem seemed the wl.ko which also could not be loaded manually ending up with the same error:
Some systems handle this problem with the linux-backports-modules-2.6.31-14-generic, but this did not work for me. But the bugreport helped actually a lot:
seals the deal. Done and online again...