Is there a KVM switch out there somewhere that doesn't result in ghosting in the picture ?

Every KVM switch I have ever used has some sort of ghosting on the video signal that gets to the monitor. This has always stopped me using a KVM switch on my PCs (despite the fact that I would be useful).

I need to use three different machines at the moment (Virtual PC saves me from needing to use about 9 different machines, but I still need these three physical machines). So I went and bought a Belkin OmniView 4 port PS2/USB switch.

I have to say it is better than any KVM switch I have used before from a ghosting point if view. But, it is still there. Thankfully it is faint enough that I can ignore it most of the time, but it is still there and annoys me when I see it.

So, are there any KVM switches out there that don't ghost, or do I have to wait for a new monitor/graphics card and step up to DVI switching ?