I installed ArcGIS server manager 10 (sp3) on IIS7 on Server 2008 64bit. The rest/services page works fine, but server manger only shows a blank page, no html at all. I've done a google search and reviewed all of the postings on ESRI that I can find and nothing has resolved this yet.
I've verified that I do not have FIPS mode enabled. I've re-ran the web post install several times. There are no entries logged to the event logs to aid in troubleshooting.