Comment 27 for bug 1003309

Right, so something *very* wrong is going on. The first thing you should try is to make sure you can still access your encrypted partitions. You can do this by booting through a live CD/USB and manually mount your encrypted partitions. Take a look at https://help.ubuntu.com/community/EncryptedFilesystemLVMHowto if you don't know how to do that.

From there, you can also take a look at the last packages you have updated (/var/log/apt/history.log in your encrypted filesystem). This should give us an hint of the last packages that have been updated in your system, as this doesn't look like a kernel issue (initramfs, cryptsetup, etc).