I just wanted to let everyone know that we recently updated Knowledge Base article 925282 to include System Center Configuration Manager 2007. In all honesty it always applied but before now we really didn't make that entirely clear, so if you've seen the article before the contents are largely the same it just now applies to the ConfigMgr 2007 as well. Considering how many potential client install issues this article resolves you really should have it filed away for easy reference.
KB925282 - How to troubleshoot Advanced Client Push Installation issues in Systems Management Server 2003 and System Center Configuration Manager 2007
J.C. Hornbeck | System Center Knowledge Engineer
The App-V Team blog: http://blogs.technet.com/appv/ The WSUS Support Team blog: http://blogs.technet.com/sus/ The SCMDM Support Team blog: http://blogs.technet.com/mdm/ The ConfigMgr Support Team blog: http://blogs.technet.com/configurationmgr/ The SCOM 2007 Support Team blog: http://blogs.technet.com/operationsmgr/ The SCVMM Team blog: http://blogs.technet.com/scvmm/ The MED-V Team blog: http://blogs.technet.com/medv/ The DPM Team blog: http://blogs.technet.com/dpm/ The OOB Support Team blog: http://blogs.technet.com/oob/ The Opalis Team blog: http://blogs.technet.com/opalis