Hello people. I think that I don't have any ideas no more. All of the sudden some IP service has failed to work, and I can't get my IP address renewed. I tried the dongle on the other PC trough the same router where the internet is functioning ok, and the same story. This is some NETGEAR WG111T thing if that's important. Thanks in advance.
There were some similar issues with the same dongles. And do you know what the solution was? The solution was with working hours of the wifi device. Some dongles just can't operate that much long as you would like to. Needs a cooling, or at least these people were saying that from their own experience. After several hours of trying everything on your mind in that moment, just some little relaxing period is enough. Try it after some break and reconfigure everything again.