Yes, I opened the internal web browser when the XR was specified.
I was able to browse the JMX-Console of my JBoss Runtime - it didn't crash - but when I tried to activate the preview or the source/preview on an XHTML/JSF page the Visual Page Editor crashes the Eclipse IDE.
It find it odd, since I've been able to use JBoss Tools 3.2 M2 on Windows and Ubuntu, but not on my Apple G5.