smtp_poplocks empty

[aubergine22]

Hi,

i have upgraded to Plesk 9.5.2 and my table smtp_poplocks is empty.
Therefor POP Authentication with qmail isn't possible anymore.

/etc/courier-imap/pop3d shows:
POPLOCK_TIME=1440
POPAUTH=1

/etc/xinetd.d/smtp_psa shows:
env = SMTPAUTH=1 POPAUTH=1

There are also no relaylock errors in /var/log/mail.info

Someone an idea?