I've downloaded and installed Zimbra desktop on my Vista PC. When starting for the first time, a window appears with title "Prism" - with some configuration items (URL, name, shortcuts etc). No matter what I do / configure, it does not close when I press OK. I don't know what this is, never seen this before when installing Zimbra (I've then been faced with the first screen to configure accounts - now I never get that far). Anyone have an idea?