You may have had a kernel panic.
Kernel Panic information is saved in logs and can be read out and examined for clues about the failure. This article show how to get them out, and you can just cut and paste them here for Readers to look at for clues, or take them to the Genius Bar.
Really appreciate your efforts to help.
Hope this is what you´re asking for:
20/12/12 23.27.20,462 mdworker: Unable to talk to lsboxd
20/12/12 23.27.20,498 sandboxd: () mdworker(1195) deny mach-lookup com.apple.ls.boxd
20/12/12 23.27.20,000 kernel: Sandbox: sandboxd(1197) deny mach-lookup com.apple.coresymbolicationd
20/12/12 23.28.22,000 kernel: HID tickle 7733484 ms
20/12/12 23.29.08,000 bootlog: BOOT_TIME 1356042548 0
These are the ones that appear just above the boot time, and they all appear quite a few times.
Hope you can help!
You tried to wake up the screen by moving the mouse, and then 45 seconds later you forced a reboot. There's no indication of what happened between those events.
I don´t see how the computer knows that the power cord is pulled out when it´s shut down??
When power is COMPLETLY removed, then restored, some Analog circuits on the processor board issue a Reset signal to just about everything, including the System Management Controller (an additional little processor that handles a lot of system details).
It all wakes up perfectly synchronized and feeling much better.