The Inquirer have more info on this running story about Dell and other laptops makers and the impression they implemented Intel power management technology SpeedStep, when they shoudn't have.

Here's a bite from their article:

In BIOS? We don't think so...

"Well that's BS because I tested it and it certainly doesn't. Once it's at 550 MHz (or 700MHz depending on whether or not it's plugged in when I start it up) it stays at the speed whether or not I plug/unplug it...

So warp to The Inquirer for more info.