I have tried the 3.2.16 and the 3.2.18 pae.bfs kernels, as well as the 22.214.171.124-pclos3.pae.bfs
The only one of the three which will successfully suspend is the older kernel.
The other two go through the motion of suspending, but at the point when the PC should switch to standby it reboots and I have to unlock the screen and am back at the desktop.
Obviously the BIOS settings are correct as the PC has on occasion successfully gone S2R since I got it ...... and still does with the 2.6.38 kernel.
Any suggestions except wait for a newer kernel to appear?