Every time I restart Firefox, the Block Pop Ups is unchecked. The Site Preferences in Clear Recent History is not checked, and Clear Recent History is set to Last Hour. I am running an anti-virus, anti-spyware software and I ran an ad checker which removed various components, but the Block Pop Ups in Firefox still won't stay checked when I restart the program. I also reinstalled Firefox, but I did not have it reset my settings (i.e., bookmarks, passwords, etc.). I have been using the Google Toolbar in Firefox.

Thanks for any help you can provide!