  Two new bright X-ray sources in globular clusters, and many less luminous
ones in globular clusters and in old open clusters, have been discovered with
ROSAT. Accurate positions obtained with ROSAT help identification with optical
objects, which however is still very incomplete in globular clusters. One dim
globular cluster source has been identified with a recycled radio pulsar;
several others may be cataclysmic variables. The four brightest X-ray sources
identified in the old open cluster M67 are puzzling, as we do not understand
why they emit X-rays. In comparison with the two old open clusters studied so
far, globular clusters are remarkably underluminous in X-rays.
