Slightly OT: Unable to wake-up after suspend

I just gave the CentOS 5.0 live CD a spin and wanted to see if suspend worked. The system did suspend but I'm unable to make it wake-up again, at all. I've tried unplugging the power cord, resetting CMOS, removing the BIOS battery and all RAM. The system shows no sign of life except the motherboar

2.6.12-rc2-mm3: 10 seconds of nothingness

156293] ACPI: No ACPI bus support for 3-2:1.0 [ 29.539613] OK. I also had this "problem" with mm1. mm2 wouldn't compile, so I didn't test that. IIRC it also happened with the rc1-mm's. Is this supposed to happen? Attached is the full dmesg. -- .-.M