Im currently running on windows 7. Recently when im using firefox, a random pop up would appear saying i have been lucky visitor number whatever, and this happens on any website at all! then it takes me to a ad while in the current page i am at. Before every ad page loads, i see "loudmo". it has been lagging down my firefox, i dont think i have downloaded anything that would have added this adware. can i get some help on how to get rid of this?