I have migrated to Zimbra 2 five days ago and everything was running smoothly, until today. Now, anytime I start Zimbra, a window from "Prism - Mozilla Labs" opens instead, with all fields and checkboxes empty.
I have uninstalled Zimbra, cleaned the registry, restarted the PC and reinstalled Zimbra, but that did not work... I am still getting the Prism window.
Any hint on how to solve this?

Zimbra was installed in the default directory.
Windows Vista SP2
Mozilla Firefox version 3.6.9