diberry - 4:17 pm on Dec 21, 2012 (gmt 0)
As Barry notes, the disavow tool is likely to work more quickly for a "manual penalty" than for a "Penguin link penalty" (which needs to wait for a Penguin refresh).
This is an important distinction. We've been linking Penguin and disavow together, and there may well be a lot of overlap, but not all Penguinized sites fit the criteria for using disavow*, and some sites not hit by Penguin might benefit from using disavow. Anyone recovering now, before there's been a Penguin update, probably had a manual penalty or some additional ranking issue besides Penguin.
*Lots of spammy backlinks, have received an unnatural link notice, have tried other removal methods first. Just being affected by Penguin is NOT the criteria.