Hi, Just when I thought I had MCE running at the refresh rate I had decided upon via powerstrip using the registry hack: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Media Center EnableRefreshRateChange=dword:00000000 i.e. tell MCE to use the current refresh rate - things get confusing. 50Hz works fine - MCE is happy with this (I get smooth pans when watching TV and PAL DVDs). But when I changed the refresh rate to 48Hz (for inverse telecined NTSC film DVDs I have rippded to Xvid format - i.e. they run at 24 frames per second), the image judders under MCE. If I user VLC (www.videolan.org) to play the file, the image is very smooth indeed - no juddering. So why does MCE respect the 50Hz refresh rate, but not the 48Hz refresh rate? My display device is a Panasonic AE700 projector connected via DVI->HDMI. I'm using a fanless Radeon 9600XT video card. Most puzzling.