THE complacency that had crept into the Bengal Left as it stepped into its 19th term in power has received a major jolt. Barely six months into its new stint at the helm and the ruling Front is knee-deep in trouble: the spectre of a separatist Gorkha resurgence stalks the CPI(M), and a crumbling CPI delivers a surprise punch on its major ally in north Bengal to settle old scores. Ironically, the Left parties have only Prime Minister H.D. Deve Gowda, the man they are sworn to support, to thank for the trouble in the hills.