version `GLIBC_2.15' not found error while upgrading to Precise beta 2

While upgrading to Precise Beta 2 from Ubuntu 11.10, I got following error in log :

(Reading database ... 183003 files and directories currently installed.)
Preparing to replace libc-bin 2.13-20ubuntu5.1 (using .../libc-bin_2.15-0ubuntu6_amd64.deb) ...
Unpacking replacement libc-bin ...
Processing triggers for man-db ...
locale: /lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.15' not found (required by locale)
locale: /lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.14' not found (required by locale)
Setting up libc-bin (2.15-0ubuntu6) ...
Installing new version of config file /etc/bindresvport.blacklist ...
(Reading database ... 183004 files and directories currently installed.)
Preparing to replace libc6 2.13-20ubuntu5.1 (using .../libc6_2.15-0ubuntu6_amd64.deb) ...
De-configuring libc6:i386 ...
locale: /lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.15' not found (required by locale)
locale: /lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.14' not found (required by locale)
Checking for services that may need to be restarted...
Checking init scripts...
Unpacking replacement libc6 ...
Preparing to replace libc6:i386 2.13-20ubuntu5.1 (using .../libc6_2.15-0ubuntu6_i386.deb) ...
Checking for services that may need to be restarted...
Checking init scripts...
Unpacking replacement libc6:i386 ...
Setting up libc6 (2.15-0ubuntu6) ...
Generating locales...
  en_AG.UTF-8... done
  en_AU.UTF-8... done
  en_BW.UTF-8... done
  en_CA.UTF-8... done
  en_DK.UTF-8... done
  en_GB.UTF-8... done
  en_HK.UTF-8... done
  en_IE.UTF-8... done
  en_IN.UTF-8... done
  en_NG.UTF-8... done
  en_NZ.UTF-8... done
  en_PH.UTF-8... done
  en_SG.UTF-8... done
  en_US.UTF-8... done
  en_ZA.UTF-8... done
  en_ZM.UTF-8... done
  en_ZW.UTF-8... done
Generation complete.
Checking for services that may need to be restarted...
Checking init scripts...

Restarting services possibly affected by the upgrade:
  rsync: restarting...done.
  mysql: restarting...done.

My locale is set as follows :

Output of "cat /etc/default/locale" :

LANG="en_IN"
LANGUAGE="en_IN:en"
LC_ALL="en_IN.UTF-8"