Logs says that a lot of solutions can not be verified by the pool today. Not sure why. I will look into it tomorrow. Will not be harmfull for the users, as payout is stopped right now until I'm sure whats wrong, and all (even the not accepted) solutions are stored. If the routine is wrong, I can fix it and can assign the right solutions back to the users

Edit: Right now new solutions where submitted. But is it true that they are not much, but that is ok, as most power is now going into Boinc/Rosetta, so it doesn't need much hps to get the blocks. I might lower the difficulty to make it more visible what is done.
But still, I will look into the invalid solutions. But they might be from not-updated clients.