Here's what's up with that.
1) Nost has (possibly 'had' if fixed) bugged item loot drops for a very large range of mobs in that greens, blues, and purples were showing up at the stock x3 stock mangos rate. It hadn't been adjusted when the server launched. Again, this might be fixed now.
2) The Beastslayer enchantment(s) were bugged in that they didn't apply their damage bonus as a small set amount to melee weapon swings. Instead, it was acting as a total damage bonus multiplier for a final total, and this was also being applied to spell damage (including AoE spells). This is also supposedly fixed now.
3) The Stranglethorn Fever questline had an unlimited number of Gorilla spawns, with bugs 1 and 2 being taken advantage of by certain players in a rush for making level 60 combined with an absurd amount of gold collected. This is supposedly fixed now as well.
The above are facts, but what is a matter of rumor is how many players took advantage of the situation, and how many were Grizzly members. I simply hope that Kronos isn't put into a situation of having something similar happening. Hopefully our Beta testers have located the most offensive unlimited spawn bugs along with bonus damage issues like that.
Edit - you know, I'm paranoid. I'm going to test that one now. The 1000 needles quest too on the Grimtotem plateu that has the winged serpent spawn as well. That one was being abused for twink blues drops.