I recently started having problems with my Firefox. First all my bookmarks have disappeared and I am unable to restore them. When I try to add a new bookmark, it does nothing. The window pops up but when I click "ok", nothing happens. And two days ago all my cookies disappeared. And Firefox doesn't seem to be making any new ones? I really like Firefox and like to keep it. Can you help me to fix these problems?
My first thought is a profile issue. Try here C:\Documents and Settings\\Local Settings\Application Data\Mozilla\Firefox\Profiles - see what profile it's using. Try here C:\Documents and Settings\\Application Data\Mozilla\Firefox\Profiles - see if they match If not, there should be an old profile stored there that would contain the bookmark backup and cookies.txt Or just go here http://www.mozilla.org/support/firefox/profile and let the experts help you.
Try Trend Micro's house call to get a free, online virus scan. It's located here: http://www.trendmicro.com/hc_intro/default.asp Just do the anti-virus, you don't need the anti-spyware one that costs money to run.