I recently moved iTunes to a new Windows XP Pro computer. In so doing, I uninstalled Firefly on the old computer. Later (after some reboots), I noticed the (red) Firefly icon still on the system tray. Turns out that the uninstall deleted the service, but left all the files in C:Program FilesFirefly Media Server. I deleted them manually.
Good info… I will indeed have to double-check the uninstaller. Thanks.