[9.280][BUG] Pop3 proxy stopped working

Hi,

today the pop3 proxy stopped working. No alerts from UTM itself, but no e-mails are being fetched and the log shows the following errors:

2014:11:08-04:00:33 firewall pop3proxy[6395]: Can't connect to database, retrying in 10 seconds: could not connect to server: Connection refused
2014:11:08-04:00:38 firewall pop3proxy[4325]: Database error: 
2014:11:08-04:00:43 firewall pop3proxy[6395]: Can't connect to database, retrying in 10 seconds: could not connect to server: Connection refused
2014:11:08-04:00:53 firewall pop3proxy[6395]: Can't connect to database, retrying in 10 seconds: could not connect to server: Connection refused
2014:11:08-04:01:19 firewall pop3proxy[6415]: Fatal: Can't write pidfile
2014:11:08-04:01:49 firewall pop3proxy[6438]: Fatal: Can't write pidfile
2014:11:08-04:02:19 firewall pop3proxy[6474]: Fatal: Can't write pidfile
2014:11:08-04:02:49 firewall pop3proxy[6496]: Fatal: Can't write pidfile
2014:11:08-04:03:19 firewall pop3proxy[6514]: Fatal: Can't write pidfile
2014:11:08-04:03:49 firewall pop3proxy[6530]: Fatal: Can't write pidfile
2014:11:08-04:04:19 firewall pop3proxy[6593]: Fatal: Can't write pidfile
2014:11:08-04:04:49 firewall pop3proxy[6609]: Fatal: Can't write pidfile
2014:11:08-04:05:19 firewall pop3proxy[6694]: Fatal: Can't write pidfile
2014:11:08-04:05:50 firewall pop3proxy[6713]: Fatal: Can't write pidfile
2014:11:08-04:06:20 firewall pop3proxy[6738]: Fatal: Can't write pidfile