Cant't shutdown G4 with LG LCD diplays connected

Well, the title summarizes it all! I've just bought two LG 19" LCD displays. Now, my MDD dual 1,25 G4 always wakes up when I put it to sleep and if I shutdown the computer, it automatically restarts.
I already resetted the PMU, did a run of Onyx and resetted the NVRAM.
Any cues on what's going on?

There is a tech note on using DVI to VGA on LCDs when connected to the OEM 9000 Radeon.
Had the same thing with ViewSonic LCD VGA.
Two solutions, use an ADC 2 VGA adapter $29 or get retail 9000, or OWC carries modified OEM 9600 (from G5, lacks ADC connector) which is a better card for only $70.
But... there aren't enough details as to your hardware setup to say "why."

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