This appears to have gotten rid of the flickering, but the side effect
is that I'm now unable to adjust brightness at all.
http://www.voria.org/forum/viewtopic.php?f=3&t=821&hilit=brightness+flicker

In short:

1. edit the "/etc/modprobe.d/blacklist.conf":
at the end add this line: blacklist samsung_laptop

2. edit "/etc/default/grub/" (if you are using grub 2):
search the line with GRUB_CMDLINE_LINUX_DEFAULT=. add the following to the 
string: acpi_backlight=vendor

3. execute update-grub

4. reboot your os

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https://bugs.launchpad.net/bugs/874361

Title:
  Oneiric introduces severe flickering when adjusting brightness

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