no swap after installing from mini.iso with encrypted home

When installing kubunut from the mini.iso and chosing to encrypt the home dir, there is no active swap after reboot. I believe this is related to the fact that the harddisk I installed on was /dev/sdb during installation, but is /dev/sda after install.

I've attached /etc/fstab and /etc/crypttab, please let me know if you need any other information.

ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: debian-installer (not installed)
ProcVersionSignature: Ubuntu 3.5.0-14.19-generic 3.5.3
Uname: Linux 3.5.0-14-generic i686
ApportVersion: 2.5.1-0ubuntu7
Architecture: i386
CurrentDmesg:
 [ 1275.685015] zram: Creating 1 devices ...
 [ 1276.022256] Adding 383044k swap on /dev/zram0. Priority:5 extents:1 across:383044k SS
Date: Sat Sep 15 13:44:43 2012
EcryptfsInUse: Yes
Lsusb:
 Bus 001 Device 002: ID 0402:5602 ALi Corp. M5602 Video Camera Controller
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
 Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
MachineType: Acer Aspire 5100
MemoryUsage:
 total used free shared buffers cached
 Mem: 766092 701336 64756 0 22352 323572
 -/+ buffers/cache: 355412 410680
 Swap: 383044 14184 368860
PccardctlIdent:
 Socket 0:
   no product info available
PccardctlStatus:
 Socket 0:
   no card
ProcEnviron:
 LANGUAGE=
 TERM=xterm
 PATH=(custom, no user)
 LANG=nl_NL.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.5.0-14-generic root=UUID=e8966b00-18f9-494b-85c5-9f5548c2ceff ro splash quiet vt.handoff=7
SourcePackage: debian-installer
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 10/15/2007
dmi.bios.vendor: Acer
dmi.bios.version: V3.10A
dmi.board.name: Navarro
dmi.board.vendor: Acer
dmi.board.version: N/A
dmi.chassis.type: 10
dmi.chassis.vendor: Acer
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnAcer:bvrV3.10A:bd10/15/2007:svnAcer:pnAspire5100:pvrV3.10A:rvnAcer:rnNavarro:rvrN/A:cvnAcer:ct10:cvrN/A:
dmi.product.name: Aspire 5100
dmi.product.version: V3.10A
dmi.sys.vendor: Acer