root@zhadum:~# apt-get install lvm2=2.02.02-1ubuntu1
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages will be DOWNGRADED:
  lvm2
0 upgraded, 0 newly installed, 1 downgraded, 0 to remove and 30 not upgraded.
Need to get 279kB of archives.
After unpacking 28.7kB disk space will be freed.
Do you want to continue [Y/n]? y
Get:1 http://nz.archive.ubuntu.com dapper/main lvm2 2.02.02-1ubuntu1 [279kB]
Fetched 279kB in 0s (411kB/s)
dpkg - warning: downgrading lvm2 from 2.02.06-2ubuntu3 to 2.02.02-1ubuntu1.
(Reading database ... 115596 files and directories currently installed.)
Preparing to replace lvm2 2.02.06-2ubuntu3 (using .../lvm2_2.02.02-1ubuntu1_i386.deb) ...
Unpacking replacement lvm2 ...
Setting up lvm2 (2.02.02-1ubuntu1) ...
Installing new version of config file /etc/lvm/lvm.conf ...
Backing up any LVM2 metadata that may exist...done.

root@zhadum:~# pvscan
  PV /dev/evms/sda3         lvm2 [226.89 GB]
  Total: 1 [226.89 GB] / in use: 0 [0   ] / in no VG: 1 [226.89 GB]
root@zhadum:~#