Mac app store shows random apps with random emails.

I decided to upgrade from Lion to mountain lion, and guess what, I found a mysterious app that I had never downloaded. I wanted to have both snow leopard and mountain lion, so I created a new partition. I installed mountain lion, and It told me 33 mins remaining. 20 mins later, it said -2 minutes later, then it switched to 19 minutes remaining. Im on a macbook pro late 2007 edition with NO PIRATED APPS. Just wanted to make that clear. I only have a monster ate my homework and microsoft office 2007 which I dragged and dropped from snow leopard to mountain lion. I used to have a problem with angry birds, asdfff2011@mail.ru or something like that. Now I have codebox by heinisf@me.com. This has not occured only to me, but to at least 100 other people. I do not have motion 5 or Final cut pro x, as those seem to affect others.