You see, i have used a software program called Digital Guitar Tuner which I assume is just as good and reliable as a real one. I know about relative tuning: a string held at the fifth fret should sound as the higher string (with the G-B exception). When I have tuned each string perfectly, electronicly, the relative tuning is only true for the two lower strings. 6th string 5th fret sounds exactly like 5th string, but the four other pairs sound very little similar.
I have practiced some chords and compared them to the sound bits on this site, and they definenitly sound wrong. Ruling out bad finger position and stroke technique, I guess the strings are bad...
What do you think?