The last couple of days I've started getting these really really f'ing annoying pop up ads that appear when I'm on mumsnet. The first time I jumped out of my skin and couldn't work out who was talking to me and now I can't stand it anymore. Also when I click to go into a thread I now often end up on another advert. What the hell is going on?? Please help!! I've only noticed these strange goings on when I'm on mumsnet.