I did an in-place-upgrade from OES2-SP1 to OES2-SP2

I had to do this over VNC and SSH since i don't have fysical access to server(Server is located in another city). Now i can't access server trough VNC. I only get a grey desktop and mousepointer i a big X.
Maybe something is not working, but everything else works perfect. eDir, iManager, NRM, iMonitor...They all works. Reboot doesnt fix this.

So i was thinking that maybe VNC is been blocked in firewall during upgrade-process. How do i check if VNC-port 5901 is opened in firewall using SSH(cli)?

BTW: I can't run YOU because another prosess is blocking. How do i check which prosess that is blocking YOU in cli?