Hi, I've installed the 29-04-2012 version of arch and updated to include lxde by the instructions from http://www.raspberrypi.org/archives/746
But it seems that pacman -Syu updates libusb-1.0.8-2 to libusb-1.0.9-1 which breaks udev and some devices does not work, specifically some mice and a webcam (an old and crappy creative pd1170 that uses gspca_conex).
Workaround for me has been not updating pacman. Each time you install a new package it asks to update pacman (which include several packages) and have always to say no.
Can this be a bug of the update? Should it be reported to archlinux?