KAMPALA, Dec 17 (Reuters) - The Ugandan shilling was slightly firmer on Friday on the back of a slowdown in appetite for hard currency from merchandise importers, traders said. At 0903 GMT commercial banks quoted the shilling at 3,550/3,560, compared to Thursday"s close of 3,560/3,570. UGX Spot Rate..... Ugandan Shilling Money Guide.... Calculated Cross Rates.......... Deposits..................... Deposits & Forwards............. Uganda Equities Guide....... Uganda All Share Index........(.ALSIUG) Shilling background ..... Ugandan Debt Guide............ All Uganda Bonds............. Uganda T-Bills.............. Uganda Benchmark............. Central Bank ................ Ugandan Contributor Index.... Uganda Coffee Prices.......