This shows up for me as well shortly before lightdm starts. Following the advice in [this bug report](https://bugs.launchpad.net/ubuntu/+source/bcmwl/+bug/1095751) I installed the Saucy version of the bcwml driver in order to be able to use WLAN on my system.
Additional information. $ policy bcmwl* bcmwl-kernel-source: Installed: 6.20.155.1+bdcom-0ubuntu6 Candidate: 6.20.155.1+bdcom-0ubuntu6 Version table: *** 6.20.155.1+bdcom-0ubuntu6 0 100 /var/lib/dpkg/status 6.20.155.1+bdcom-0ubuntu0.0.1 0 500 http://ftp-stud.hs-esslingen.de/ubuntu/ precise-updates/restricted amd64 Packages 5.100.82.38+bdcom-0ubuntu6 0 500 http://ftp-stud.hs-esslingen.de/ubuntu/ precise/restricted amd64 Packages $ uname -a Linux UBN 3.8.0-30-generic #44~precise1-Ubuntu SMP Fri Aug 23 18:32:41 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux ** Changed in: linux (Ubuntu) Status: Expired => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1160322 Title: [ 21.125934] INFO @wl_cfg80211_attach : Registered CFG80211 phy To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1160322/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs