neildt - 8:47 am on Nov 14, 2012 (gmt 0)

One of our hotel travel sites saw impressions drop by 50%; as a result click throughs are down too. This appeared to happen 6th Nov.

It would appear some of our 'better' pages are still ranking; but the low quality pages we know of have been hit.

Once these low quality pages are improved do I have to wait for a Google Panda update, or will the pages re-appear once the improvement has been made and indexed ?