Comment 25 for bug 53040

No, I have not created, nor modified udev rules. It was not prerelease of Feisty. One machine was 6.10 and upgraded to 7.04 and other one is fresh install of 7.04.
The one that was upgraded is pretty much clean machine, since it serves like backup-via-ssh server. It doesn't have any of the testing services like the other one machine.

Anyway, I don't see any harm having relaxed permissions on /lib/udev/devices/null .

Any ideas what else to examine?