repeat _quickly_ the following:
press and hold shift;
press and hold the semicolon key;
you should obtain an infinite sequence of semicolons;
press any key to stop it.
i call /usr/bin/Xvnc with the following options:
-query localhost -depth 24 -interface 192.168.0.1
i'm willing to help to solve this problem, so let me
know any other piece of information you need, or any
kind of testing i can do!
thanks for your good work, anyway!