I have approved "Windows Internet Explorer 9 for Windows Server 2008 for x64-based systems (982861)" update for all computers (we don't have separate groups) few days ago, but none of our Windows Server 2008 x64 (Enterprise, Standard) are picking it up. Update lists those servers as NotAppicable. I have even tried to approve 32-bit one. All other systems picked this update normally (Vista 32-bit, Windows 7 32-bit and Windows Server 2008 R2 x64). What's the problem with Windows Server 2008?
WSUS 3.2.7600.251 (hosted on one of those Windows Server 2008 x64). Haven't tried to install manually yet.