Comment 22 for bug 524281

Similiar on a ASUS V1SN Intel Core 2 Duo T7700 (ubuntu 10.4)

Top causes for wakeups:
  47.9% ( 63.5) [kernel scheduler] Load balancing tick
  12.2% ( 15.1) [ata_piix] <interrupt>
  9.7% ( 13.4) [iwlagn] <interrupt>
   8.1% ( 8.9) [extra timer interrupt]

---
+ acpi errors

UBUNTU kernel: [ 0.186131] ACPI Error: ACPI path has too many parent prefixes (^) - reached beyond root node (20090903/nsaccess-429)
..
UBUNTU kernel: [ 0.222562] ACPI: PCI Interrupt Routing Table [\_SB_.PCI0._PRT]