It appears that when taking an image of a multi-partition single disk Linux system, swap partitions aren't actually copied, but reformatted when the partition is pulled back down to disk. In Fedora 15, partitions are identified in /etc/fstab by UUID rather than hard device path (/dev/sda3, etc.). When FOG formats this partition, /etc/fstab still has the reference to swap as the old UUID, even though a new one is generated for the freshly formatted partition. This causes the boot to hang for several minutes before finally erroring out and continuing.
This is fixed in the OS with the following:
sudo swapoff -a
sudo blkid t TYPE="swap" [to list out the partition and it's UUID]
sudo nano /etc/fstab [replace the swap UUID with the one listed out in the previous command]
I don't know how you would fix this exactly on the FOG side of things, short of actually copying the swap partition so it retains the UUID value.
I can confirm this problem.. We're seeing the same problem with Fog version 0.32
This is still happening in Fog version 1.1