Hello Artur and Jose, I have just tested the viruskiller version 1.03-1+dfsg1-2 and my scores are not saved, so I'm considering the bug as reproducible. It seems all 3 levels of high scores are placeholder lists with the same names of players, random points, and all with 100 kills.
One thing to notice is that at some point in the gameplay my scores always go negative, so it might be simply that I could not displace any of those fake players from the list because my points were not high enough. But the fact that my own higher scores are not saved seems to be a functional bug IMHO. If anyone else is willing to dig into this, I hope this helps! Cheers, Tassia.