I’m having a similar problem.
I am connecting to two different XServes running Vine Server 2.2. One is a G5-based XServe, the other an Intel-based XServe. My desktop is a mirror-door G4 Power Mac, and I’m using Chicken of the VNC to connect. I’ve also tried using Jolly’s Fast VNC.
When I connect to the PPC XServe, I get the lines through the window like the parent poster described. Fonts look jaggy, etc. When I connect to the Intel XServe, things look/act fine.
I’ve previously connected to these machines using “vncviewer” on my Red Hat Enterprise 4 machine that was my previous desktop with no problems. The machines are also both hooked up to a kvm in the server room, and have no display issues.
ARD is not running on either machine, and I’m connecting through an ssh tunnel for both machines.
Any ideas of what could be going on, or information you’d like?