I have been having some issues with the mass driver. Basically uLaunchELF 3.41k worked, but now uLaunchELF 3.41l doesn't. I can't copy a file from the mass to the hdd anymore.
Also I posted a bug fix to ps2dev about directories and looking for a double 0 to find the last one. It never made it into the SVN. Could you put it in for the next release.