I have a bunch of websites 10+ yrs which have always ranked well in G for my keywords.
I recently changed the whole structure of the websites intending to improve user experience and perhaps tweak the SERPS .
These websites were rolled out about the same time as Panda.
My sites are all hit!
In some cases , Down from #1 to gone!
I am hoping its just a total re-index by G and nothing to do with Panda - I don't copy content or develop link farms.
After the new sites were rolled out I checked the number of urls indexed by G for one or two of them and saw very few indexed. Monitoring access logs over the next few days showed googlebot working hard and now the inurl test shows many for them. I hope this means a reindex was being done.
When can I reasonably expect to see results appear in the SERPS after the next update in G?