Duff-Man says....I'd guess it's in the com.apple.bluetooth.plist file that's located in /library/preferences (not in your user directory). There's a section in there for devices and also for cached info. I'd probably try making a back-up copy of the file, then editing it to delete the unwanted item from the device list and/or cache. Another one to try is just use a util like Onyx and go into its "Cleaning" section, then the system sub-section and uncheck all but "other system components" inn the delete cache options - that *might* do it....oh yeah!