I love old Dream Theater, they were my second favourite band for quite a while (behind Porcupine Tree, before I discovered Opeth). Octavarium was a travesty in my opinion though, as bad as St Anger (though I'm not a Metallica fan so I was a lot more let down by DT). Systematic Chaos was better but to be honest the only tracks I really like are In The Presence Of Enemies (both parts) and Forsaken. I used to like the Dark Eternal Night but got bored.
I'll still buy the new one, but my hopes aren't very high.
maybe you got the wrong forum...