  We present simulation results addressing the phenomena of colloidal gelation
induced by attractive interactions. The liquid-gas transition is prevented by
the glass arrest at high enough attraction strength, resulting in a colloidal
gel. The dynamics of the system is controlled by the glass, with little effect
of the liquid-gas transition. When the system separates in a liquid and vapor
phases, even if the denser phase enters the non-ergodic region, the vapor phase
enables the structural relaxation of the system as a whole.
