We have a couple new Knowledge Base articles that published the week before last so if you're running either ConfigMgr 2007 or System Center Essentials you might want to check them out:
Users cannot modify advertisements that they created in the System Center Configuration Manager 2007 Administration Console
System Center Config Manager 2007 AL
Error message when you try to start the Opsmgr Health service on a Windows Server 2003-based computer: "Could not start the Opsmgr health service on Local computer. Error 0x8004005"
System Center Essentials 2007 EN
J.C. Hornbeck | Manageability Knowledge Engineer