Feisty: Boot time errors and problems with udev/USV/hotplugging

[Dave M G]

Ubuntu Users,

Since I upgraded to Feisty, I've been having trouble with some USB 
devices, particularly when it comes to hot plugging them.

My USB SD card reader, my USB Bluetooth dongle, and my Palm Pilot do not 
connect.

My Wacom USB tablet works (probably because it is connected at boot 
time), but it is behaving a little odd (the mouse wheel works in the 
reverse of how it should).

At boot time, I get these errors, which I believe point to the problem, 
although I don't know enough about what they mean to be able to do 
anything with the information:

udevd [2649]: add_to_rules: invalid SUBSYSTEMS operation
udevd [2649]: invalid rule `/etc/udev/rules.d/10-udev.rules:3`
udevd [2649]:  invalid KERNEL operation
udevd [2649]: invalid rule `etc/udev/rules.d/10-wacom.rules:3`
udevd [2649]: specified group nvram unknown


What might be the problem, and how can I solve it?

Thank you for any advice

-- 
Dave M G
Ubuntu 7.04 Feisty Fawn
Kernel 2.6.20-13-386
Pentium D Dual Core Processor