When in Firefox in "bookmarks" "organize bookmarks" to search a specific bookmark, I input a tag that I know the site is classified under, my typing is paralysed half way into my typing, and the "spinning color ball" appears and it takes about 1 or 2 minutes for the typing of my complete tag word to rush in and finally be visible and only then the list of websites having that tag appears in my list of bookmarks. It used to be instantanious, it now takes up to 5 minutes. I've removed some "Add-ons" as suggested but it doesn't help.