Planet13 - 4:12 pm on Jul 26, 2013 (gmt 0)
@ Robert Charlton:
I don't think that is the exact forum thread.
I am about 90% certain that there was a response that Matt Cutts had written regarding the comparative speed that one could expect to be released from a manual penalty when compared to an algorithmic effect. I am PRETTY certain that he did use the phrase "months and months".