ACPI daemon makes 100% CPU load

[maestro]

Binary package hint: acpid

Using ACPI on Toshiba L40 laptop makes 100% CPU load by sy (even when booting from liveCD)
here:
 vmstat 1
 procs -----------memory---------- ---swap-- -----io---- -system-- ----cpu----
 r b swpd free buff cache si so bi bo in cs us sy id wa
 5 0 0 863888 20212 241612 0 0 158 9 477 4846 29 69 1 1
 4 0 0 863732 20212 241612 0 0 0 0 368 4717 30 70 0 0
 3 0 0 863748 20212 241612 0 0 0 0 398 4824 26 74 0 0
 2 0 0 863748 20212 241612 0 0 0 0 366 4722 27 73 0 0
 3 0 0 863732 20212 241612 0 0 0 52 400 4734 34 66 0 0
 3 0 0 863732 20212 241612 0 0 0 0 385 4810 32 68 0 0
 2 0 0 863748 20212 241612 0 0 0 0 388 4740 31 69 0 0
 2 0 0 863732 20212 241612 0 0 0 0 380 4764 21 79 0 0
 2 0 0 863788 20212 241612 0 0 0 0 400 4831 29 71 0 0
 3 0 0 863788 20212 241612 0 0 0 0 368 4733 27 73 0 0
 3 0 0 863788 20212 241612 0 0 0 0 402 4785 35 65 0 0
 1 0 0 863732 20212 241612 0 0 0 0 381 4747 22 78 0 0
 3 0 0 863740 20212 241612 0 0 0 0 387 4745 27 73 0 0
 3 0 0 863748 20212 241612 0 0 0 0 380 4806 28 72 0 0
 3 0 0 863692 20212 241612 0 0 0 0 405 4797 26 74 0 0

maestro@maestro-laptop:~$ dmesg | grep ACPI
[ 0.000000] BIOS-e820: 000000005f7a0000 - 000000005f7ae000 (ACPI data)
[ 0.000000] BIOS-e820: 000000005f7ae000 - 000000005f7f0000 (ACPI NVS)
[ 0.000000] ACPI: RSDP 000F8840, 0024 (r2 ACPIAM)
[ 0.000000] ACPI: XSDT 5F7A0100, 008C (r1 TOSASU TOSASU00 9000719 MSFT 97)
[ 0.000000] ACPI: FACP 5F7A0290, 00F4 (r3 TOSASU T0SASU00 9000719 MSFT 97)
[ 0.000000] ACPI: DSDT 5F7A0680, C1A0 (r1 TOSASU TOSASU00 0 INTL 20051117)
[ 0.000000] ACPI: FACS 5F7AE000, 0040
[ 0.000000] ACPI: APIC 5F7A0390, 005C (r1 TOSASU T0SASU00 9000719 MSFT 97)
[ 0.000000] ACPI: MCFG 5F7A0430, 003C (r1 TOSASU T0SASU00 9000719 MSFT 97)
[ 0.000000] ACPI: SLIC 5F7A0470, 0176 (r1 TOSASU TOSASU00 9000719 MSFT 97)
[ 0.000000] ACPI: DBGP 5F7A03F0, 0034 (r1 TOSASU T0SASU00 9000719 MSFT 97)
[ 0.000000] ACPI: BOOT 5F7A05F0, 0028 (r1 TOSASU T0SASU00 9000719 MSFT 97)
[ 0.000000] ACPI: ECDT 5F7A0620, 0054 (r1 TOSASU T0SASU00 9000719 MSFT 97)
[ 0.000000] ACPI: OEMB 5F7AE040, 0060 (r1 TOSASU T0SASU00 9000719 MSFT 97)
[ 0.000000] ACPI: HPET 5F7AC820, 0038 (r1 TOSASU TOSASU00 9000719 MSFT 97)
[ 0.000000] ACPI: GSCI 5F7AE0A0, 2024 (r1 TOSASU GMCHSCI 9000719 MSFT 97)
[ 0.000000] ACPI: ATKG 5F7B02D0, 8024 (r1 A_M_I_ OEMATKG 0 0)
[ 0.000000] ACPI: SSDT 5F7B8300, 060F (r1 PmRef Cpu0Cst 3001 INTL 20051117)
[ 0.000000] ACPI: SSDT 5F7B8910, 02CD (r1 PmRef CpuPm1 3000 INTL 20051117)
[ 0.000000] ACPI: DMI detected: Toshiba
[ 0.000000] ACPI: PM-Timer IO Port: 0x808
[ 0.000000] ACPI: Local APIC address 0xfee00000
[ 0.000000] ACPI: LAPIC (acpi_id[0x01] lapic_id[0x00] enabled)
[ 0.000000] ACPI: LAPIC (acpi_id[0x02] lapic_id[0x81] disabled)
[ 0.000000] ACPI: IOAPIC (id[0x01] address[0xfec00000] gsi_base[0])
[ 0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl)
[ 0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level)
[ 0.000000] ACPI: IRQ0 used by override.
[ 0.000000] ACPI: IRQ2 used by override.
[ 0.000000] ACPI: IRQ9 used by override.
[ 0.000000] ACPI: HPET id: 0x8086a201 base: 0xfed00000
[ 0.000000] Using ACPI (MADT) for SMP configuration information
[ 0.018173] ACPI: Core revision 20080609
[ 0.023164] ACPI: Checking initramfs for custom DSDT
[ 0.460028] ACPI FADT declares the system doesn't support PCIe ASPM, so disable it
[ 0.460028] ACPI: bus type pci registered
[ 0.460420] ACPI: EC: EC description table is found, configuring boot EC
[ 0.471807] ACPI: Interpreter enabled
[ 0.471811] ACPI: (supports S0 S1 S3 S4 S5)
[ 0.471836] ACPI: Using IOAPIC for interrupt routing
[ 0.478361] PCI: MCFG area at e0000000 reserved in ACPI motherboard resources
[ 0.493305] ACPI: EC: GPE = 0x1c, I/O: command/status = 0x66, data = 0x62
[ 0.493308] ACPI: EC: driver started in poll mode
[ 0.493538] ACPI: PCI Root Bridge [PCI0] (0000:00)
[ 0.494752] pci 0000:00:1f.0: quirk: region 0800-087f claimed by ICH6 ACPI/GPIO/TCO
[ 0.495338] ACPI: PCI Interrupt Routing Table [\_SB_.PCI0._PRT]
[ 0.495720] ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.P0P2._PRT]
[ 0.495895] ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.P0P3._PRT]
[ 0.496123] ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.P0P6._PRT]
[ 0.524818] ACPI: PCI Interrupt Link [LNKA] (IRQs 3 4 5 6 7 *10 11 12)
[ 0.525072] ACPI: PCI Interrupt Link [LNKB] (IRQs 3 4 *5 6 7 10 12)
[ 0.525323] ACPI: PCI Interrupt Link [LNKC] (IRQs *3 4 5 6 7 10 12)
[ 0.525572] ACPI: PCI Interrupt Link [LNKD] (IRQs 3 4 *5 6 7 10 12)
[ 0.525822] ACPI: PCI Interrupt Link [LNKE] (IRQs *6)
[ 0.526067] ACPI: PCI Interrupt Link [LNKF] (IRQs 3 4 5 6 *7 10 12)
[ 0.526317] ACPI: PCI Interrupt Link [LNKG] (IRQs 3 *4 5 6 7 10 12)
[ 0.526565] ACPI: PCI Interrupt Link [LNKH] (IRQs 3 4 5 6 7 *10 12)
[ 0.531072] ACPI Warning (tbutils-0217): Incorrect checksum in table [ATKG] - 32, should be 4A [20080609]
[ 0.531207] pnp: PnP ACPI init
[ 0.531217] ACPI: bus type pnp registered
[ 0.535819] pnp: PnP ACPI: found 13 devices
[ 0.535821] ACPI: ACPI bus type pnp unregistered
[ 0.535826] PnPBIOS: Disabled by ACPI PNP
[ 0.536263] PCI: Using ACPI for IRQ routing
[ 0.537852] ACPI: RTC can wake from S4
[ 2.460251] ACPI: CPU0 (power states: C1[C1] C2[C2] C3[C3])
[ 2.464292] processor ACPI0007:00: registered as cooling_device0
[ 2.464297] ACPI: Processor [P001] (supports 8 throttling states)
[ 2.481220] ACPI: EC: non-query interrupt received, switching to interrupt mode
[ 2.499680] ACPI: Expecting a [Reference] package element, found type C
[ 2.504972] ACPI: Thermal Zone [THRM] (61 C)
[ 4.745407] ata1.00: ACPI cmd f5/00:00:00:00:00:a0 filtered out
[ 4.745474] ata1.00: ACPI cmd ef/10:06:00:00:00:a0 succeeded
[ 4.745477] ata1.00: ACPI cmd ef/10:03:00:00:00:a0 filtered out
[ 5.082679] ata1.00: ACPI cmd f5/00:00:00:00:00:a0 filtered out
[ 5.082754] ata1.00: ACPI cmd ef/10:06:00:00:00:a0 succeeded
[ 5.082757] ata1.00: ACPI cmd ef/10:03:00:00:00:a0 filtered out
[ 10.165136] ACPI: Power Button (FF) [PWRF]
[ 10.178521] ACPI: Power Button (CM) [PWRB]
[ 10.192040] ACPI: Sleep Button (CM) [SLPB]
[ 10.193943] ACPI: Lid Switch [liD]
[ 10.794091] ACPI: AC Adapter [AC0] (on-line)
[ 10.996911] ACPI: Battery Slot [BAT0] (battery present)
[ 11.296039] ACPI: Video Device [VGA] (multi-head: yes rom: no post: no)
[ 23.790917] ACPI: WMI: Mapper loaded
maestro@maestro-laptop:~$

setting option acpi=off works, but it's not that good)

ProblemType: Bug
Architecture: i386
DistroRelease: Ubuntu 8.10
ExecutablePath: /usr/bin/yelp
Package: yelp 2.24.0-0ubuntu1
ProcEnviron:
 PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: yelp
Uname: Linux 2.6.27-7-generic i686