[ltp] sleep broken on x40 w/FC5

[linux-thinkpad@linux-thinkpad.org]

i have an X40 with Fedora Core 5 installed.
i followed the directions here:
http://www.catb.org/~esr/faqs/Fedora-Core-on-Thinkpad-X40/
which says "Add "acpi_sleep=s3_bios" to the kernel options in 
/etc/grub.conf to make suspend/resume using Fn-F4 work."
but it doesn't.  sometimes it wakes up to blackness with
disk spinning, sometimes it draws parts of windows on the
screen.  any advice would be much appreciated.  my kernel:

Linux version 2.6.17-1.2174_FC5 
(brewbuilder@hs20-bc2-3.build.redhat.com) (gcc version 4.1.1 20060525 
(Red Hat 4.1.1-1)) #1 Tue Aug 8 15:30:55 EDT 2006
...
ACPI: RSDP (v002 IBM                                   ) @ 0x000f6fa0
ACPI: XSDT (v001 IBM    TP-1U    0x00001670  LTP 0x00000000) @ 0x1f6e822e
ACPI: FADT (v003 IBM    TP-1U    0x00001670 IBM  0x00000001) @ 0x1f6e8300
ACPI: SSDT (v001 IBM    TP-1U    0x00001670 MSFT 0x0100000e) @ 0x1f6e84b4
ACPI: ECDT (v001 IBM    TP-1U    0x00001670 IBM  0x00000001) @ 0x1f6f6df9
ACPI: TCPA (v001 IBM    TP-1U    0x00001670 PTL  0x00000001) @ 0x1f6f6e4b
ACPI: MADT (v001 IBM    TP-1U    0x00001670 IBM  0x00000001) @ 0x1f6f6e7d
ACPI: BOOT (v001 IBM    TP-1U    0x00001670  LTP 0x00000001) @ 0x1f6f6fd8
ACPI: DSDT (v001 IBM    TP-1U    0x00001670 MSFT 0x0100000e) @ 0x00000000
ACPI: PM-Timer IO Port: 0x1008
ACPI: Local APIC address 0xfee00000
ACPI: LAPIC (acpi_id[0x01] lapic_id[0x00] enabled)
Processor #0 6:9 APIC version 20
ACPI: LAPIC_NMI (acpi_id[0x01] high edge lint[0x1])
ACPI: IOAPIC (id[0x01] address[0xfec00000] gsi_base[0])
IOAPIC[0]: apic_id 1, version 32, address 0xfec00000, GSI 0-23
ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl)
ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level)
ACPI: IRQ0 used by override.
ACPI: IRQ2 used by override.
ACPI: IRQ9 used by override.
Enabling APIC mode:  Flat.  Using 1 I/O APICs
Using ACPI (MADT) for SMP configuration information