Hi, I've got an issue that I can't seem to find any information on. We've got a 2003 functional level AD structure running on server 2003 R2 DCs with a central data store for group policy administrative templates. When loading GPMC on either Vista or Server 2008 and clicking on the settings tab to generate a report, it will take over 30 minutes for the report to show up. When doing the same thing using GPMC on Server 2003 or XP it loads up in seconds. I'm newer to the company, but I'm told that when the central store was implemented there was no delay in generating reports of what settings are applied in each GPO when using Vista. The event log came up with this error ".NET Runtime Optimization Service (clr_optimization_v2.0.50727_32) - Failed to compile: Microsoft.GroupPolicy.Targeting.Interop, Version=2.0.0.0, Culture=Neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=x86 . Error code = 0x800700b6" one of the times when I generated a report on Server 2008, but didn't occur on Vista and now didn't reoccur when I tried again on the same Server 2008 install. Anyone have any ideas what might be causing this huge delay or how I might narrow down where to check? Regards, William Curley