not able to post on 4chan's imageboards

Ok, after a weekend of not using my computer due to playing Real Life MMO(tm) I come back to 4chan and whenever I try to reply to a thread I get "Error: Abnormal reply.".

I normally use Opera but I also tried IE and Firefox and both give me the same error.

>>5
Nope, I have the same problem, and at least one other person in /tech/. Someone post a thread in /b/ asking for german useres with t-online account. There should be some around, with t-online being the biggest ISP of Germany, but today you will have the thread dying quicker than a frog in a blender.