Hello all,
Duesentrieb and I solved the problem with the post-parameters. The problem was a module, which I have had installed today to reject a DOS.
I have disable it now. To solve the DOS-Problem, I plan to use iptables. For this, a new kernel is needed and I need to make a reboot. So I prognosticate you a reboot for friday, 14:00 CET (Thats 13:00 UTC). It should be a couple of minutes (just rebooting).
Sorry for making problems again :(
Sincerly, DaB.