Similar problem here. I upgraded my Debian unstable today to udev version 0.113-1 and rebooted 2.6.23-rc1+git (have booted a couple of days earleier git snapshot fine).
On startup, udev failed with error on some rules and sata_sil module was not loaded and some disks did not mount. The error messages were about ignoring errors. I found similar messages in syslog but I am not sure whether the timestamps is of the reboot, maybe rather package installation time. Jul 30 09:27:55 muuseum udevd[3304]: add_to_rules: unknown key 'RUN{ignore_error}' in /etc/udev/rules.d/z55_hotplug.rules:10 Jul 30 09:27:55 muuseum udevd[3304]: add_to_rules: unknown key 'RUN{ignore_error}' in /etc/udev/rules.d/z55_hotplug.rules:13 -- Meelis Roos ([EMAIL PROTECTED]) -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]