2500 x PR0 x .COM backlinks/day is the limit for the G to not to get you banned.
Okay, I hate it when people like you start stating opinions as fact. Lets get a few things strait.
#1 I'm not saying you're wrong, it's impossible to prove to disprove any set number for a multitude of reasons.
#2 That sounds extremely unlikely, actually all hard limits sound unlikely, after all, I'll just take your username, find other forums where you link to your websites and then proceed to blast 2501 links a day to them and watch you get ban hammered. Yeah, it doesn't make sense to be that easy to get morons delisted now does it? After all, if I could, I would. (Well, actually I can, it just takes being a heck of a lot more creative than just blasting links)
#3 How did you test this?
#4 Why is some new guy on the forum (hey, I'm not the oldest member here either so do go hating on me for pulling this one) claiming to have the end-all answer to another persons legitimate request for information when NO ONE has the full answer. Even the lead tech at Google couldn't rattle off all the factors of aggressive building without spending a few hires reading the algorithm again.
#5 You mentioned PR0, how do you suppose we check this, since the public PR data is on a long-term (seems to be 3-6 month updates over the past few years) cache? Yeah, you can't check real time PR, so guess what, it's now IMPOSSIBLE for you to know this algorithm since you can't check it either.
Yeah, it's late, and blatant mis-information struck a chord.