I have overlay problems .. for instance I wish to log in to a site. partially over the words"log in" will appear the "forgot password" I type in my pass word and when I push enter it takes me to forgot password site. This happens in other instances also. Words over other words that prevent me from seeing clearly.. I do not know what causes this, but I switch to safari when I have the problem and proceed using it. Ofcourse I love my Firefox ,, so need to correct this problem.. Thank you for your time