Comment 1 for bug 47758

I have figured this out I think. I think because the Live CD created the incorrect partitions, it failed when calling mkswap to initialize the swap partition. After I fixed the partitions I ran mkswap for that space and then called swapon, which worked fine.

This is definitely a big issue for laptops and low memory machines. If this is truly an issue from the installation I would consider this a high priority bug for the next release and I would also provide some wiki documentation to help folks that have encountered this issue, perhaps even a script to fix this problem using the Ubuntu apt updates.