Resuming from suspend on a Dell Latitude D400 does not work out of the box in SLED 10 SP1. When you try to suspend a dialog pops up saying you have to force it, and when you do, the video card isn't initialized correctly when the laptop comes out of suspend.
Edit /etc/powersave/sleep with your favorite text editor (such as gedit, vi or nano).
Set SUSPEND2RAM_FORCE="yes" and set
Then restart powersaved with '/etc/init.d/powersaved restart
Suspend to disk and suspend to RAM now both work perfectly :)
SLED 10 SP1, brand new clean install. Tested this on two different Dell Latitude D400s (mine and a friend of mine)
Disclaimer: As with everything else at Cool Solutions, this content is definitely not supported by Novell (so don't even think of calling Support if you try something and it blows up).
It was contributed by a community member and is published "as is." It seems to have worked for at least one person, and might work for you. But please be sure to test, test, test before you do anything drastic with it.