Ageing dynamics of a re-entrant ferromagnet stage-2 Cu(0.8)Co(0.2)Cl(2) graphite intercalation compound has been studied using DC magnetization measurements. This compound undergoes successive transitions at the transition temperatures T(c) (≈8.7 K) and T(RSG) (≈3.3 K). The relaxation rate S(ZFC)(t) exhibits a characteristic peak at t(cr) below T(c). The peak time t(cr) at constant t(w) shows a local maximum around 5.5 K, indicating a slow dynamics arising from a frustrated nature of the ferromagnetic phase. It drastically increases with decreasing temperature below T(RSG). The spin configuration imprinted at the stop and wait process at a stop temperature T(s) (
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