One of my customers is in the TAP program for Windows Vista Service Service Pack 2.  They wanted to use SCCM/WSUS to deploy updates to the Vista SP2 Beta clients that they have in production.  This is how we got the Vista SP2 updates in WSUS...

To troubleshoot SCCM Task Sequences we use the smsts.log located on the SCCM client.  Unlike other SCCM components, the size of the smsts.lg is not configurable in the registry. Keep in mind that Task Sequences can run even before we get the SCCM...