Comment 2 for bug 857858

I am seeing the same behavior on my HP Elitebook 8440p which has :

44:00.0 Network controller: Intel Corporation Centrino Ultimate-N 6300 (rev 35)
        Subsystem: Intel Corporation Centrino Ultimate-N 6300 3x3 AGN

This model uses the iwlagn module which also triggers the constant blinking

On my system, there is no /etc/modprobe.d/wlan.conf file Creating a new file with the following content and reloading the iwlagn module does stop the blinking :

# cat /etc/modprobe.d/wlan.conf
options iwlagn led_mode=1

I did not see this before upgrading to Oneiric and back on Natty, I did not have a /etc/modprobe.d/wlan.conf file

HTH

...Louis