Few things might have happend all at 1 time which can slow your computer and or browsing down. My belifes is that sometimes that has something to do with ActiveX. Maybe Im wrong, but the best way to remove all of those is two things, 1 find and purchase a program called, "Your Uninstaller 2006" just incase it is viewable, it will show up if it is.
2, get Microsofts Defender 2 program and download it, install it and update it. Once youve done the update, make sure you run a full scan and then head over to check out your Systems Explores/IE Settings. There, you can reset your entire IE or FF Browser. You should be good to go.