Laptop no longer sleeps when I close the lid

[Solidify]

My Toshiba Satellite A60 running Windows XP SP3 no longer enters sleep mode when I close the lid. It used to work when I had Windows 7 on it but I downgraded and have since experienced this problem. There is nothing wrong with the actual switch on the laptop since a couple of days ago before the downgrade in OS. Now, when I close the lid, the screen goes black, but the moment I re-open it, it resumes instantly. It does not enter sleep/hibernate mode. The hibernate mode is fully functional though. I've tested it from the Start Menu.

I don't know if the following may help to asses my issue but these are my current power settings.