First, it is difficult to reproduce this bug -- I don't know yet what exactly triggers it. The last few days, I've been using the LAN network instead of WLAN, and the crash has not shown up anymore. Now, I switched to the mainline kernel linux-image-2.6.34-999-generic 2.6.34-999.201004261005 (that one boots correctly), and also enabled the netconsole logging, and switched back to using WLAN -- let's see whether the crash happens again.
First, it is difficult to reproduce this bug -- I don't know yet what exactly triggers it. The last few days, I've been using the LAN network instead of WLAN, and the crash has not shown up anymore. Now, I switched to the mainline kernel linux-image- 2.6.34- 999-generic 2.6.34- 999.20100426100 5 (that one boots correctly), and also enabled the netconsole logging, and switched back to using WLAN -- let's see whether the crash happens again.