From the 10.2 ChangeLog.txt:
a/udev-064-i486-2.tgz:  Commented out the new lines in udev.rules.  It seems
  like these aren't really needed now that the symlink in 
  /etc/hotplug.d/default/ was restored, and having them there causes a race
  race condition that can cause things like wireless adaptors that need to
  load firmware to fail to initialize.

Solution (thanks to _Hitek_  hitekeuh at yahoo dot fr)

1) Backup your udev.rules:
   cp /etc/udev/rules.d/udev.rules /etc/udev/rules.d/udev.rules.orig

2) Open /etc/udev/rules.d/udev.rules with a text editor and uncomment
   by removing the # at the beginning of each line:

   #ENV{UDEVD_EVENT}=="1", RUN+="/sbin/udev_run_hotplugd"
   #RUN+="/sbin/udev_run_devd" 

3) REBOOT. Don't try to simply restart udev, or it will lead you to some problems.