i made a video guide on how to avoid this and to get rid of it
![:P](images/smilies/msn_tongue.gif)
some other adware maybe?
i've had the sponser on my pc many times to make the video and it's always been fine
http://www.plussounds.net/Other then installing without sponser or sponser removal
![;)](images/smilies/msn_wink.gif)