LVM based swap partition causes delay to booting

Having upgraded to precise, the boot process keeps hanging with the message to 'wait for partition' before boot completion. The system always has to wait for the lvm based swap. This didn't happen previously, and I'm not sure precisely why it hangs now, whereas it didn't before. The rest of the boot completes normally, and the swap is activated as expected, however it takes longer, and presents an error message - perhaps components are enabled too late for the mount point?

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: lvm2 2.02.66-4ubuntu7
ProcVersionSignature: Ubuntu 3.2.0-18.29-generic 3.2.9
Uname: Linux 3.2.0-18-generic x86_64
NonfreeKernelModules: fglrx
ApportVersion: 1.94.1-0ubuntu2
Architecture: amd64
Date: Sun Mar 11 16:34:59 2012
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111011)
ProcEnviron:
 LANGUAGE=en_GB:en
 TERM=xterm
 PATH=(custom, no user)
 LANG=en_GB.UTF-8
 SHELL=/usr/bin/zsh
SourcePackage: lvm2
UpgradeStatus: Upgraded to precise on 2012-03-10 (0 days ago)