Read this and get wise to it...and check the pics of the actual ‘pop-up’..
It doesnt have to be a porn clip...But it is posing as a ‘needed codec to watch’
http://blog.trendmicro.com/more-than-a-half-a-million-web-sites-compromised/
If any link here leads to something like that....let me or a Mod know ASAP...and place a warning in the offending thread..
Just a heads up…
DB