Why does the SiteVision server run in a Java 'Client VM'?

It doesn't! SiteVision always starts Java with the init parameter '-server'. Hence the JVM SiteVision runs in are always a Server VM, never a Client VM.

Though, if you manually try to check the VM (i.e. execute 'java -version') of the JVM that SiteVision runs in you get different results ('Server VM' or 'Client VM') depending on the hardware of the machine. This is due to a feature introduced in Java 5.0 called Ergonomics.