lucy24 - 11:17 pm on Nov 17, 2012 (gmt 0)
You can't tell from the thread title, but the OP made it sound as if the question is about number of redirected pages, not about number of redirect steps for an individual page.
Anyone have any figures on elapsed time? When googlebot meets a redirect it puts the second URL on its shopping list for later. How much later? Is it a predictable function of overall crawl frequency for the site? Does this second URL carry a tag that says "redirected"? What happens when the redirected URL meets yet another redirect? By the time your search engine bot arrives at a working URL, how much time has elapsed and how much extra baggage is the robot carrying?