1)ASRock Z68 Motherboard
2)Intel i5-2405S CPU
3)Ubuntu 10.10 through 12.04
4)Suspends but will not Resume
Seems that many of the Sandy Bridge motherboards, not just ASRock, have issues with suspend/resume. The kernel's handling of ACPI needs updating.
UPDATE: Updated BIOS, 2.10, and now it resumes after suspend. The upgrade BIOS was really for Ivy Bridge CPUs, but something was done to work correctly with Sandy Bridge also. Hurray!