Framerate sync help \ bug

[Shasoosh]

Hey,
I'm using a Philips LCD that supports :
720p 50, 60Hz
1080i 50, 60Hz
1080p 24, 25, 30, 50, 60Hz
My problem is this,
Most of my movies are 24p and this is my default output: 1080p 24p

frame rate sync is ON with: NTSC/PAL/24p
Now, when i try to watch 50Hz or 60Hz movies i get weird green lines or other colors glitches in the movie. if i change the output to the right output, say 50Hz, I see the movie smooth with no problems. Needless to say that if i change the framerate sync to OFF i also don't see any colors but I'm getting a lot of jerkiness etc'.

Is that a known bug? Is there a fix?