Comment 22 for bug 926350

here is the process which i followed to fix the issue

In case if someone else has an issue with sudo access with 12.04. They need to reinstall the gnutls library with nettle not with lingcrypt. As the libgcrypt library is broken. Here is the process

# apt-get source gnutls26

remove --with-libgcrypt from the debian/rules file. build using this command

# debuild -i -uc -us -b

install using

# make install

That's it.