Ok, so i'm using windows 8 for some weeks. I noticed some nasty things.

1.I have 2 intel ssd 520 series, and i noticed that the overall SSD performance both in real life and benchmarks are slower in Windows 8 than W7.
2. And the task manager is kinda laggy, i mean i click on the bar to start the task manager and i need to wait 1 second for the apps and programs icons to appear, this is stupid.
3.My CPU speed in task manager displays a wrong CPU speed. I have mine overclocked at 4.5Ghz, and the task manager displays all kind of cpu speeds, 5.31Ghz, 5.13Ghz, 4.95Ghz, etc.
And programs like cpu-z and other, displays the proper cpu clock.