@Content_ed I was effected by the Panda update in April. Traffic tanked about 30% from April 17-July 17. I made no changes to the site. However, around mid July everything came back and then some.
My site has about 10,000 pages in the index. Two days ago, I noticed a bunch of DNS timeout or network timeout errors in Webmaster Tools. These are dated Nov 13, Nov 16 and Nov 19. There are now about 458 effected urls though these pages display perfectly for me.
Currently I'm not effected by decrease in traffic - but dreading a future shoe drop. Because of what happened in April, I'm just wondering if some the of believed "Panda" penalties are due to Googlebot issues.