After updating the kernel on 2.6.38-gentoo-r6, not re installs. Reproducible: Always
Created attachment 274927 [details] /var/tmp/portage/sys-fs/udev-151-r4/temp/build.log
Created attachment 274929 [details] My system: emerge --info
Given that it's fixed in recent udev and sys-kernel/linux-headers 2.6.38 is still in unstable...well, mixing tends to give nasty surprised every now and then.