Andreas,

have you tried using USER.ACCOUNT style for user ID (which
is case sensitive) and userpass,acctpass for password(s)
already? With no passwords, the comma is still required...

Hope this helps.

Lars.

PS: I hope to get the filename mapping "soon". It was also
    discussed on IPROF last week that the HFS/POSIX file
    system might/should be enhanced to accept more characters
    as legal. But no commitment so far...