Useful troubleshooting jump off point for when you need to raise a support case with Microsoft CSS. It's called the SMS / ConfigMgr Callback Information and Resources website
Even if you are not raising a case, its worth being bookmarked for the tips and links off in to the ConfigMgr documentation library
http://blogs.technet.com/configmgrcallback/default.aspx
Read the complete post at http://wmug.co.uk/blogs/r0b/archive/2009/04/15/sms-configmgr-callback-information-and-resources-website.aspx