IBM ThinkPad T42 ACPI suspend woes

[Tim Hull]

I've installed Ubuntu on my IBM ThinkPad T42.  I was pleasantly
surprised to get everything working easily (including wi-fi, which was
super easy with my intel 2200 wireless).  However, ACPI has some 
problems.  While speedstepping and laptop-mode work great, suspend has 
some problems.  I made a script to use ACPI suspend when I close the lid 
of my laptop (in the /etc/acpi directory).  I unload the ehci_hcd 
module, unload my winmodem modules, and then put it into sleep with this 
script (restarting the things that were stopped upon resume).

 The system goes into sleep easily when I close the lid, however, it uses
10% of my battery for each hour that I leave my laptop in suspend, which 
is way too much (in Windows it barely uses anything).  APM works and 
doesn't use 10% of my battery per hour in suspend, but the laptop gets 
very hot in APM, as speedstep doesn't work.  Does anyone have any 
suggestions to fix this problem with ACPI?