I have been plagued by unwanted data, files, toolbars, etc. in Firefox. These include items associated with "search.babylon.com", "search.snap.do", Quicklinx for Firefox, Babylon Toolbar, and more. I have eliminated toolbars via Revo Uninstaller and I have removed Add-Ons in Firefox. I have restarted with all add-ons disabled and I still see data when I search about:config in Firefox, and this led to the following questions: (1) when searching about:config in Firefox for any lines containing "babylon" I get a list of 72 lines that begin with "extensions.babylon." which suggests that an extension is causing the entries but all extensions are disabled. How do I get rid of these entries?; (2) when I look in "C:\Users\Dean\AppData\Roaming" I find folders for all of the unwanted entries (Babylon, Quicklinx, etc.) plus I find folders for other software that I have uninstalled in the past. Is it possible to simply delete the unwanted folders found here without doing serious damage to the computer?; (3) is there anything else that needs to be done to delete unwanted data?