one thing about vista activation
i have instaled and activated (and validation) vista home premium 64 on my home computer (intel P965+ICH8R) with sata controller in ide mode, later i changed mode to ahci and surprise - i need activation again (noticed this later because i was out a few days after changing mode and computer was off - passed the 3 day grace period)

reverting to ide mode - vista is activated

i consider this a critical and stupid problem, since there is no hardware change and i hope for a solution to this
thank you!