Andres, thanks for following this up. '/etc/acpi/hibernate.sh' didn't
work for me (after the ubuntu splash screen when resuming, the screen
went black and I couldn't do anything); I used 'gnome-power-cmd.sh
hibernate' instead. Also, my computer is a desktop rather than a laptop,
and it apparently can't do suspend ('Error
org.freedesktop.PowerManagement.NoHardwareSupport: Suspend is not
available on this computer').

I'm attaching the dmesg output from the resume; this being said, I think
the problem is pretty much resolved for me. I only get the thrashing
when displaying an application for the first time; for instance, for my
last test, I opened up several large images in the Gimp, switched
workspaces to the terminal, then hibernated. When I resumed, I was
returned to the terminal workspace without any thrashing; when I
switched over to the Gimp workspace, the HDD thrashed a bit as the PC
was trying to display the images, and then stopped once they were all
displayed; this seems acceptable to me. Note that this is different from
the behaviour I was seeing when I originally posted to this bug report.

The main changes since my original report were upgrading to Intrepid,
switching my secondary HDD (which doesn't contain the root, boot or swap
partitions), and several kernel upgrades. Again, I'm happy that this
issue is resolved for me.

** Attachment added: "dmesg-hibernate.txt"
   http://launchpadlibrarian.net/21085165/dmesg-hibernate.txt

-- 
Huge hard drive activity after resuming from S3 suspend on a IBM x31
https://bugs.launchpad.net/bugs/15372
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