Laptop reboots instead of resume from suspend

[Dave Morgan <davemorgan353@xxxxxxxxxxxxxx>]

I'm using an Inspiron 1720, GeForce 8600M GT, Arch i686.  If I update to
any kernel after 2.6.31.6-1 then the laptop reboots from suspend or
hibernate.

According to pm-suspend.log the suspend was fine and there are n
problems in the other logs.  It just reboots.

Anyone else seen this, or any suggestions for a fix?

-- 
Dave.