muzza64 - 7:40 am on Aug 7, 2012 (gmt 0)

Elsmarc, there was a Panda refresh on July 25th......if your rankings have been demoted for many sections of your site to varying degrees of severity it's possible this is the explanation.

The typical symptoms are ranking demotions to reduce your traffic, as opposed to complete removal of traffic by removal from the SERPS (which would indicate something else possibly). Panda doesn't tend to stop your traffic completely, just removes it from the problem areas of your site and, to a lesser extent, any areas close to the problem areas.