My all time favorite band Fear Factory have gone there seperate ways due to there vocalist (Burton C Bell) saying he doesn't want to be in the band anymore.
A 12 year run with some of the best songs ever.
They made 11 kick ass albums that I'll never forget:
1992: Soul of a new machine
1993: Fear is the mind killer
1995: Demanufacture, Dog day sunrise
1997: Remanufacture, Burn
1998: Obsolete, Resurrection, Revolution
1999: Cars
2001: Digimortal
Oh well life goes on, there's still Static X and Slipknot.