You might be running into a "feature" not a bug.

The HDMI standard was dictated by content producers, and incorporates various forms of "Digital Rights Management", or DRM. This is to prevent DVDs from being copied, copyrighted broadcasts from being recorded, etc.

Because HDMI and many other consumer electronics systems incorporate all this garbage, many folks consider them "Defective by Design".

http://revision3.com/forum/showthread.php?t=7914
http://www.boingboing.net/2006/05/23/hdmi-the-manchurian-.html
http://www.defectivebydesign.org/