I'll add my experience, hope this helps. Ultra short version: add many
Mini-ITX EPIA boards to the list of affected systems, and possibly
remove the Asus EeePC 701 from the same list.

The Via EPIA EK-10000G board with a Nehemiah 1GHz CPU does not have PAE, but 
having two ethernet ports and onboard Serial-ATA it's still a useful system. Of 
course it fails booting from the current 12.04 standard netboot image, but 
boots and installs just fine from the current 12.04 non-pae netboot image. The 
real problem on this board is that with the default vga=something command line 
option (from the netboot image) you won't see the kernel dmesg, so you won't 
see the "This kernel requires the following features not present on the CPU: 
pae" message either and will just keep staring at a blank screen. Since this is 
affected by the VGA, I cannot confirm if a different monitor would work better 
(but I can confirm that the non-pae image will show up the installer fine with 
the same vga= option on my system).
I sill have around some slightly older EPIA M10000 boards that should use the 
same CPU and be affected by the same non-pae issue.

@lbsolost: I can confirm that the non-pae netboot image (item #2.C of
your list ;) works perfectly on my non-PAE EPIA EK-10000G (I choose, as
usual, the Ubuntu Server environment, and it installed and rebooted
correctly on the non-pae kernel image). I use that as a low-wattage
server and it's great to be able to run 12.04 LTS on the system. I guess
its real usefulness will come to an end before Precise Pangolin end of
life :)

@danniel and @eexpress
My Asus EeePC 701 (the first model, with 4GB onboard SSD and Celeron-M 900MHz 
underclocked to ~600MHz) does have PAE, and is currently running Precise 
installed from the standard netboot image (not the non-pae one). It is actually 
running the non-pae kernel but I can't remember if the installer choose it 
automatically or if it let me choose. You should see the 'pae' flag in 
/proc/cpuinfo even if you're running a non-pae kernel.
Anyway, I manually installed the PAE kernel and can confirm it can boot just 
fine too.
IIRC, the CPU inside the 701 should be a Celeron M ULV 353: 
http://ark.intel.com/products/27157

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https://bugs.launchpad.net/bugs/930447

Title:
  Unable to Install Ubuntu 12.04 on Pentium M x86 Laptop due to PAE
  kernel

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