billuk - 9:53 pm on Nov 5, 2012 (gmt 0)

I run a site with a significant forum, showing predominantly Adsense.

Over the past couple of days a number of users are reporting pop-up surveys appearing. After some searching it would appear a number of other websites are experiencing similar issues.

The forum software varies, but Adsense is a theme.

I haven't unfortunately been able to replicate it on my own site.

I was wondering whether anyone has experienced similar?