i too am affected by this bug. i have a thinkpad x40. i made fdi files
similar to comment #4. for me this bug doesn't happen at every
suspend/resume, it happends about once in five suspen/resume cycles.

there is a workaround and maybe also fix for this problem in thinkwiki:
http://www.thinkwiki.org/wiki/How_to_configure_the_TrackPoint

here the text from thinkwiki
----
Scrolling may be disabled after a resume from suspend.

You can manually reactivate the trackpoint by reloading the psmouse
module as root:

    # rmmod psmouse && modprobe psmouse

You can automatically force the pm-utils to reload this module. Create a
file /etc/pm/config.d/01reload_mouse as root with the following content:

# reload psmouse to reactivate trackpoint scrolling
SUSPEND_MODULES="${SUSPEND_MODULES:+$SUSPEND_MODULES }psmouse"

-- 
Wheel emulation doesn't work after suspend/resume
https://bugs.launchpad.net/bugs/289023
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