Re: Twinview Metamodes
First, I'd suggest removing the ConnectedMonitor option altogether.
You have two CRTs:
Acer AL1916W (CRT-0)
NEC LCD1760NX (CRT-1)
CRT0 can natively do "1440x900", CRT1 can natively do 1280x1024. I suspect the reason that you're seeing the distortion on CRT1 is because 1440x900 isn't really a native mode for it.
You can try commenting out your 1440x900 modeline, however if that doesn't help, you should change your Metamodes to something like this:
Option "Metamodes" "1440x900,1280x1024"
and your "Screen1" modes to something like this:
Modes "1400x900" "1280x1024"