Hi list members,
the problem is solved.
It seems there were some problems with 'vconvert -c -m', after setting
the password manually everything went well.
I don't know if and when I'll have time to invertigate this issue, but
for those being affected (dear archive reader :-))) ) this SQL command
_MIGHT_ help resetting all encrypted passwords for being "in synch" with
the clear text password (untested, backup your database before trying
UPDATE vpopmail SET
ROUND(R AN D()*10),5),"0"));