Another update (02-12-2010/12.02.2010):
The datacenter just told me that with a high probability the mainboard is broken. They installed the new HDD but the server still seems to be dead. Bad luck, I guess.
Currently I am inquiring more info on renting a dedicated server from VD. I am also thinking about getting an additional server from serverloft.com based in St. Luis. A dependance of a well known ISP in Germany. If I am going to get that server though, there will have to be donations by players to keep it up as it weighs in at ~100$ per month.
Should know more this weekend. Feel free to pm me via this forums on any questions you have or suggestions.