I was adding items to the Application Launcher (via Menu Editor) and I added firefox 3.5, but for some reason it didn't work and loaded the old firefox 3. So I deleted it and added another one instead. It happened again, so I tried one more time. Now when I type "Firefox" into the Application Launcher's search box, it shows four results for Firefox even though going to Menu Editor shows only 2! How do I fix this?