Mateusz,
Judging by your email to me, and recent posts, I realize you are frustrated with these reports. However, you have already confirmed two of them, and said you have fixes for them this week. So I don't think I'm just blowing hot air here. Judging by the few posts you do get, I would be happy that someone out there is beta testing for you! :-)
As for my system, I am running a dual 1.42 Mac, OSX 10.2.6, with the most recent version of Nuendo 2.1.10. I have the most recent drivers of Metric Halo's ULN-2. And I am running two UAD cards with 3.3.1 drivers for OSX.
So there's my system: is it suitable to run PSP plugs?