Density functional B3LYP/6-31G(d,p) calculations fail to yield reliable binding energies, intermolecular distances, and hydrogen-bonded X-H frequency shifts for eight selected hydrogen-bonded complexes for which experimental data are available. Properties of these complexes obtained with the B3LYP functional and the 6-31+G(d,p) basis are usually improved, and can be similar to MP2/6-31+G(d,p) values. In those cases where noticeable differences exist between B3LYP16-31+G(d,p) and MP2/6-31+G(d,p) results, the MP2/6-31+G(d,p) values are in better agreement with experimental data.