SVN Repo has bitten the challenge twice.
phiber managed to solve the challenge by logging in as Silvester2013 and removing the gpg pubkey.
This is of course not the way how to solve it; there is some math and rsa cracking involved.
Thanks to phiber for reporting the problem!
Also dloser first did a trick, by calculating the random password as he knew the secret from SVN as well.
The challenge got reset and there should be no other than the intended way to solve it now.
The geeks shall inherit the properties and methods of object earth.