I have used Ubuntu 9.04 through 10.10 and all worked very nicely with the VNC server. I could log in from home with a Windows machine no problem. After upgrading or installing fresh Natty 11.04, VNC server does not work at all. This is on multiple machines. It either comes up with an error after waiting a long time or indicates the VNC server cannot start on the port (no matter which port I use!). Changing back to the Classic desktop does not fix it; this is a problem with 11.04 and is really irritating!!
BYW- tried to enter a bug report but launchpad would not accept my password(?)
Very frustrated!