Tray icon gone

My tray icon is gone.

Services are running…how can I get it back?

By the way:

) its not possible toi uninstall (some file is missing)
) its not possible to reinstall (it tells me, that I should use internet update)

Hello!
Do you have any other antivirus installed in your system?
Did you install one in the past?
Do you use a firewall and/or proxy filter?
Which is your operational system?

We need to know a little bit more about your computer to help you…

I did not change or install anything.

I have stopped all services, deleted the whole directory, installed (now it did work) and now its runnign again.

Windows XP Pro with all Updates , Kerio Firewall, no other AV Program