On Thursday, Mar 4, 2004, at 17:54 Canada/Eastern, Gretchen Hayman wrote: > The state field of U means the thread is set to the state > TH_STATE_UNINTERRUPTIBLE (i.e. the thread is in an uninterruptible > wait). Top translates this to a stuck process. Thanks, Gretchen. A searched for TH_STATE_UNINTERRUPTIBLE resulted in a some interesting reads, relevant also to the thread on killing a stuck process. f