It is getting even more strange! For me, everything always worked fine untill the ddos happened. Now, after it, I have the following situation:

I have two computers, although they use different hardware, they use the same windows version, same updates, same software, go through the same router and internet-connection.

One of them, which uses poclbm, is connecting and mining fine, the other, also using poclbm, won't connect, even if I use the worker-details of the other computer.