Comment 17 for bug 438379

hmm, seems like sending 'mem' to /sys/power/state doesn't create any errors on ext4 file system:
echo mem | sudo tee /sys/power/state
(though later it causes problems with X, see here:
http://www.linux.com/news/hardware/laptops/8253-how-to-suspend-and-hibernate-a-laptop-under-linux)

my opinion is that kde software is messing the file system up.
huh, god help linux