fathom - 4:00 am on May 24, 2013 (gmt 0)
I don't understand this idea that Penguin 1.0 just looked at the home page. I hardly had any links to my homepage, and the pages it affected were not the homepage. What am I not understanding?
Well "hardly" does not imply you had none.
So maybe the "hardly links" you had actually had the PENGUIN problem on the resident domain and that translated to less link juice to your domain... and that would have a similar impact.