PPA package error in ubuntu 10.04

[subodh]

I got following error while installing ppa package in ubuntu :-

a at a-laptop:~$ sudo dpkg -i '/home/a/Downloads/pidgin-ppa_0.0.2_all.deb'
Selecting previously deselected package pidgin-ppa.
(Reading database ... 134395 files and directories currently installed.)
Unpacking pidgin-ppa (from .../pidgin-ppa_0.0.2_all.deb) ...
Setting up pidgin-ppa (0.0.2) ...
OK
dpkg: error processing pidgin-ppa (--install):
  subprocess installed post-installation script returned error exit status 2
Processing triggers for ureadahead ...
Errors were encountered while processing:
  pidgin-ppa