Hi, i managed to start fvwm2 (by Ctrl+Alt+F2 in the XFCE login window and startx /usr/bin/fvwm2) and tried whether Brasero and ASUS drive have a better relationship then. They don't. It's as bad as with XFCE.
The Brasero run was started with a blank CD-RW in the drive and came, with two pauses of a minute, up the "Checkreading" stage. Then it complained that the drive was in use and the ASUS drive went unusable as with the XFCE tests. After a power cycle i verified that the CD was burned completely and tried whether readom is to blame: readom dev=/dev/sr0 f=cdimage.raw It isn't. The drive stays usable after aborting readom with Ctrl+C because it was stuck with futile retries to read the two TAO Run-out sectors at the end of the track. The MD5 of cdimage.raw then matches the ISO image. The CD does not get automounted with fvwm2. So this aspect of XFCE is not a suspect any more. Have a nice day :) Thomas