eispfogel: The guys who updated there intel drivers... are you using the drivers from intel, or from your notebook manufacturer? Because some Brands like HP, or Dell are using there own drivers and they are hardly the newest version.
Understatement of the year I'd say. HP seems to be of the opinion that if they update graphics drivers once in a notebook's lifecycle, they've gone above and beyond what's expected of them. On top of that they (at least for ATI and NVidia) make sure you don't get any strange ideas like installing the drivers from ATI/Nvidia. So you're stuck with HP's gimped drivers.
On my last HP laptop the newest HP drivers could just about cope with Half-life 1 albeit with a choppy framerate. Used MobilityModder to allow me to install the official ATI drivers after which the laptop ran Half-life 2 about as well as half-life 1 had run before.
I have a theory part of th reason might be because they're horrible at cooling solutions for their computers, and making sure the chips are never pushed means less heat to try to cool off.