Comment 17 for bug 468519

I have experienced what I believe is the same problem on a MacBook Pro 2,1 with Karmic.

{{{
 *-network
                description: Wireless interface
                product: AR5008 Wireless Network Adapter
                vendor: Atheros Communications Inc.
                physical id: 0
                bus info: pci@0000:03:00.0
                logical name: wlan0
                version: 01
                serial: 00:17:f2:eb:b5:1b
                width: 64 bits
                clock: 33MHz
                capabilities: bus_master cap_list ethernet physical wireless
                configuration: broadcast=yes driver=ath9k ip=192.168.0.21 latency=0 multicast=yes wireless=IEEE 802.11abgn
                resources: irq:17 memory:98100000-9810ffff
}}}

After a fresh install of Karmic, I experienced fairly frequent random crashes which required hard resets. At first I thought the crashes might graphics driver related but was able to rule this out when the system crashed with no applications open at all.

I then noticed the prevalence of syslog entries such as:

{{{
Feb 25 21:18:13 truffles wpa_supplicant[1164]: CTRL-EVENT-SCAN-RESULTS
Feb 25 21:20:13 truffles wpa_supplicant[1164]: CTRL-EVENT-SCAN-RESULTS
}}}

just before crashes occurred. This was *before* finding this bug report.

After finding this bug report, I tried turning wireless networking off and using a network cable, and had a couple of days working without any network connection at all. In both cases I had no further crashes. Turning wireless networking back on coincides with crashes reoccurring.