iPhone multitasks certain "services" that it allows. Such as audio, gps, data access etc. Apps do not multitask the way we are used to on a pc where it is constantly given cpu cycles in full when required. However, most people do not seems to care or can tell the difference as long as it does things they want. (such as IM apps being always logged in, music playing while web browsing etc)

But I want more. I want things done in real time even when running in the background. I want full control. I want my avi/mkv video to continuously play while I browse the web to at least hear the sound, youtube video within the web browser to stay playing in background while I check another website, an emulator snes rpg game to stay "running" and count time while I do other things etc. Current hardware can easily do all this, but the OS are not made to do this as the developers/decision makers thing we don't want it.

Umm. That doesn't make any sense. N900 has a GPU also. A pretty decent one as well. (SGX530) We already can guess that N9/ION has at least OMAP3 and most likely better one than the N900. So it should be at least SGX535 (which is capable of even 1080p playback as shown in Samsung Galaxy Tab 1) and if it's OMAP4, it's SGX540 which is more than enough for 1080p. (as used in LG Optimus 3D) It could also be STE U8500 and in that case, it will come with ARM's Mali-400MP which is also 1080p capable. (SGS2 uses Mali-400MP) Since N8/E7 has HDMI out, it would be really bad looking if Nokia N9 doesn't come with one.