SMS: Troubleshooting server, component, and hierarchy issues
http://support.microsoft.com/kb/241001/en-us
And below a SMS 1.x and 2.x article for thoose of you who want to know want keywords that its possible to search for a bit fun in my opinion so I had to post it
Happy reading
SMS: Keywords List for Searching
http://support.microsoft.com/kb/199435/en-us

Ill be there….
Me myself and Anders Mr Contoso will be at TechED IT Forum 2007 (EMEA). If you would like to meet and talk dont hesitate to contact us.
Microsoft now released their new forums for System Center Configuration Manager 2007. They are ment to be used instead of the newsgroups.
You can find both me and the forums at the following link.
http://forums.microsoft.com/technet/default.aspx?forumgroupid=488&siteid=17
Client registration is unsuccessful when you switch System Center Configuration Manager 2007 from mixed mode to native mode or from native mode to mixed mode.
http://support.microsoft.com/kb/938009
You may experience errors on computers that run site system roles that rely on IIS after you install System Center Configuration Manager 2007.
http://support.microsoft.com/kb/938699
I have had alot of questions from customers who cant upgrade from SMS 2003 to the SCCM RTM_EVAL. Yes it did work in the RC1 build, but it doesnt work anymore. You will have to wait for the full release to do that. When the full release arrive you will need to have at least SMS 2003 SP2