Hi I am experiencing an issue with mirroring displays, which I posted on Apple's Discussions without a response. After recently purchasing a new LCD television, I noticed the composite video out from my MacBook was not ideal - there were two sets of wavy horizontal lines. I then bought a mini DVI to VGA adapter to use with the television's VGA input, which produced a much higher quality output, free of the horizontal lines. The problem I have encountered is that I can only mirror the displays, not use different resolutions as I could with video out. I noticed some strange irregularities when changing resolutions. When attempting to uncheck "Mirror Displays" and perform some other tasks in the "LCDTV" window, there is a beep and then nothing happens. The "Mirror Displays" checkbox remains unchecked but no action is taken. Even the checkbox to display in the menu does not work. I am using Leopard, version 10.5.1. Is it possible that the problem is attributed to the LCD television? Is there any way to diagnose what the problem is? Thanks.