This bug was fixed in the package mysql-5.1 - 5.1.54-1ubuntu3
--------------- mysql-5.1 (5.1.54-1ubuntu3) natty; urgency=low
* debian/mysql-server-core-5.1.files, debian/mysql-client-5.1.files: Fix upgrade from 5.1.49. (LP: #710976) -- Chuck Short <email address hidden> Tue, 01 Feb 2011 09:45:41 -0500
This bug was fixed in the package mysql-5.1 - 5.1.54-1ubuntu3
---------------
mysql-5.1 (5.1.54-1ubuntu3) natty; urgency=low
* debian/ mysql-server- core-5. 1.files, debian/ mysql-client- 5.1.files:
Fix upgrade from 5.1.49. (LP: #710976)
-- Chuck Short <email address hidden> Tue, 01 Feb 2011 09:45:41 -0500