For other reasons I decided to dispense with udev, and now the autoload happens as it should here, with removed the /etc/modules nvidia entry, and IGNORE_PCI_CLASS_DISPLAY is again true in my /etc/default/hotplug. Just confirming other people's reports...
BTW, maybe the nvidia package should have reportbug collect the info on devfs/udev status on the reporting machine? -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]