package mysql-client-5.1 5.1.49-1ubuntu9 failed to install/upgrade: trying to overwrite '/usr/bin/my_print_defaults', which is also in package mysql-server-core-5.1 5.1.49-1ubuntu9

I've been struggling w/ my updates since I started using natty -- I've become very comfortable w/ using ubuntu, however, am still pretty elementary when it comes to troubleshooting.
Recently, upon login to gnome, Ive been getting several application errors (popups), most that I'm not really even sure what their purpose is to begin with =)

ProblemType: Package
DistroRelease: Ubuntu 11.04
Package: mysql-client-5.1 5.1.49-1ubuntu9
ProcVersionSignature: Ubuntu 2.6.38-1.28-generic 2.6.38-rc2
Uname: Linux 2.6.38-1-generic i686
Architecture: i386
Date: Mon Jan 31 21:26:33 2011
DpkgTerminalLog:
 Preparing to replace mysql-client-5.1 5.1.49-1ubuntu9 (using .../mysql-client-5.1_5.1.54-1ubuntu2_i386.deb) ...
 Unpacking replacement mysql-client-5.1 ...
 dpkg: error processing /var/cache/apt/archives/mysql-client-5.1_5.1.54-1ubuntu2_i386.deb (--unpack):
  trying to overwrite '/usr/bin/my_print_defaults', which is also in package mysql-server-core-5.1 5.1.49-1ubuntu9
ErrorMessage: trying to overwrite '/usr/bin/my_print_defaults', which is also in package mysql-server-core-5.1 5.1.49-1ubuntu9
InstallationMedia: Ubuntu 10.04 "Lucid Lynx" - Beta i386 (20100318)
SourcePackage: mysql-5.1
Title: package mysql-client-5.1 5.1.49-1ubuntu9 failed to install/upgrade: trying to overwrite '/usr/bin/my_print_defaults', which is also in package mysql-server-core-5.1 5.1.49-1ubuntu9