I wouldn't be so hard on misanthrop - this takes patience to get into. The piece only really becomes dynamic at 7'13". And, let's face it - not everyone can really stand cryptic droning and primal screams. I'm not so sure about this one myself.
My version is too. I think all versions are. It's probably just like that because of the first guy listening to this song had a song 18:41 long.. perhaps mislabelling or something. Oh well. Amazing song.