1. How is running ultravnc on win7 ?
Did you see uvnc_service running at the windows task manager tab Processes ?
you can connect and input vnc password, then you can't do nothing ?
so your winvnc have wrong setting or bad parameter at vncviewer.
FAQ view only, keyboard locked, no mouse control
view only, keyboard locked, no mouse control
Is it running by user request, remote user right click on winvnc add new client ... input your hostname to your vncviewer listening ?
if this case, as soon your partner, open application that need User Account Control (UAC), this lock input vncviewer keyboard but should not stop mouse anyway!