10+ yrs old site, original content. No frequent updates in last few years. I have not made any changes after Feb panda 1.0 to today.
February Panda 1.0 – lost 50% traffic
March Panda 2.0 – further loss of traffic to almost 75% of total traffic in previous years.
June/July Panda X? – as is
September 26 Panda Y – although officially it is Sept 26, my site recovered from 75% traffic loss to now 25% over all starting Sept 19.
September 27 Panda Z? – no effect.