I have been getting this Ad randomly appearing and blocking my screen (on Mumsnet only) for approx 2 weeks. The left side states Government of Western Australia, there is no way of seeing URL of the advert (it just shows the main MN URL) and can only get rid of it by closing browser (but it then comes again!).
I messaged MN help, did what they asked, including completely clearing all history, cache etc, anything on iPad that could remember MN, but I am still getting it and now at point of not being able to read a thread properly.
Just wondered if it was just me or have others had the problem?