  We examine the early angular momentum history of stars in young clusters via
197 photometric periods in the Orion Flanking Fields, 83 photometric periods in
NGC 2264, and 256 measurements of v sin i in the ONC. We show that PMS stars,
even those without observable disks, apparently do not conserve stellar angular
momentum as they evolve down their convective tracks, but instead evolve at
nearly constant angular velocity. This result is inconsistent with expectations
that convective stars lacking disks should spin up as they contract, but
paradoxically consistent with disk-locking models. We briefly explore possible
resolutions, including disk locking, birthline effects, stellar winds, and
planetary companions. We have found no plausible explanations for this paradox.
