I have a tricky problem.
My computer is dual-boot OpenSuse_11.0/M$ WinXp, and the problem is when I shut it down (poweroff) from Linux - the next morning it turns on at 6 a.m. though the BIOS RTC Alarm feature and APM are turned off (however the alarm time in BIOS is set to 6a.m. but the alarm itself is OFF)
Next, when I shut it down from WinXP - it stays off until I push the Power button.
As far as I can conclude the problem is in linux kernel module (apm,acpi,rtc or something else I don't know of) or I am wrong, but I have no idea how to fix it. Most of the search results are exactly the oppposite - people desire to know how to transform a computer into an alarm clock