Can´t logon via web client

[patrick.hartwig]

after more than 4 weeks running my server, now i can´t logon anymore via web-client or web-admin. The login screen appears, but after i try to logon, the login screen come back and nothing happens.
My Wing Ftp is running under Ubuntu Linux 10.04.3 LTS.

Please help, it´s urgend
thanks

Patrick

[FTP]

Did you set some IP access rules? And you can also try to restart the WingFTP service.