First of all, great site! I've found some great tips here.
I have created SCCM 2007 collections based on Active Directory OUs by following the process found here: http://www.techrepublic.com/blog/datacenter/making-sms-2007-collections-based-on-organizational-unit/381 This works as expected on about 75% of OU based collections that have been created. The other collections are not populating entirely. Some machines show up and some do not. System Group Discovery and System Discovery are enabled. The computers that are not appearing in these OU collections do show up in All Systems collection. Any advice?
Thanks,
Dick