You have set your computer system's connection limit to a fixed number of distribution points. This prevents the overload of the distribution servers when a large number of clients attempt to run an advertisement at the same time.
Clients can attach to the distribution point until the connection limit is reached.
The clients can retry the connection every 10 minutes. To resolve this problem, obtain the latest service pack for Systems Management Server version 2.0. To work around this issue, create a new program for the failed package and a new advertisement that targets the clients that failed to run the package. This problem was first corrected in Systems Management Server 2.0 Service Pack 3. Shutting down this IPC thread.