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We address the cosmological moduli/gravitino problems and the issue of toolittle thermal but excessive non-thermal dark matter from the decays of moduli.The main examples we study are the G2-MSSM models arising from M theorycompactifications, which allow for a precise calculation of moduli decay ratesand widths. We find that the late decaying moduli satisfy both BBN constraintsand avoid the gravitino problem. The non-thermal production of wino LSPs, whichis a prediction of G2-MSSM models, gives a relic density of about the rightorder of magnitude.

Non-thermal Dark Matter and the Moduli Problem in String Frameworks