Comment 23 for bug 745960

Ok, so I tried two different setups on Oneiric (in a VM):
 - Regular automated partitioning with LVM + cryptsetup => worked fine
 - Custom manual partitioning with just one primary bootable partition as a LVM physical volume containing one VG then containing two LVs, one for my root and another for my swap. => worked fine

So I'm not sure exactly what's wrong in your case and the information I found attached to your bug reports doesn't let me replicate the bug.

I'd appreciate it if you could try with Oneiric (either daily or beta2).
The attach the following information (either from the installed system if it boots or from a livecd, mounting the target system):
 - brief description of the partitioning options you selected at install time
 - /var/log/installer/syslog
 - output of "dmesg"
 - output of "lspci -nnn"
 - output of "sudo parted -l"
 - output of "sudo lvdisplay -a"
 - /etc/default/grub
 - /boot/grub/grub.cfg

Thanks