Excessive messages generated by vboxwebsrv

[Serge]

vboxwebsrv that is run by /etc/init.d/vboxweb-service writes 2 logs to /var/log/messages for every successfull authentication attempt:

Aug  3 17:05:15 fserver vboxwebsrv: pam_sm_authenticate: Called
Aug  3 17:05:15 fserver vboxwebsrv: pam_sm_authenticate: username = [vbox]

This leads to flooding of /var/log/messages, especially when vboxwebsrv is used by phpVirtualbox.

Suggested fix: log only failed authentication attempts by default, OR allow user to specify different log facility/priority.