Found the source of my problem (resume from standby always fails)... I think.
Opus acknowledged an issue with some motherboards which take a while to POST. iBase MB896 is one of them. They need to update the firmware on my PS, which only they can do. Have to send it in. DOH!
... and resume from hibernate is taking 1 minute from ignition on to system available. I'm thinking I might downgrade from 1GB of memory to 512 to see if that speeds things up..
Half the memory, the hiberfile is cut in half and that means a quicker resume right? Who knows.
If anyone does...