superman:/# apt-cache show mysql-server-4.1
Package: mysql-server-4.1
Priority: extra
Section: oldlibs
Installed-Size: 84
Maintainer: Christian Hammers <ch@debian.org>
Architecture: i386
Source: mysql-dfsg-5.0
Version: 5.0.32-7etch3
Depends: mysql-server-5.0
Filename: pool/main/m/mysql-dfsg-5.0/mysql-server-4.1_5.0.32-7etch3_i386.deb
Size: 47336
MD5sum: c303c553a72e9819ea90efbd04973bbb
SHA1: 8f769dc8818e6ff03a9424cb3a31c6f16766ef77
SHA256: 6c5f013f2e880332eea7aedb992375f99388d9d5bf7ebd52d73f136a1f9557c0
Description: mysql database server (transitional package)
 MySQL is a fast, stable and true multi-user, multi-threaded SQL database
 server. SQL (Structured Query Language) is the most popular database query
 language in the world. The main goals of MySQL are speed, robustness and
 ease of use.
 .
 This is an empty transitional package and can safely be removed.

superman:/# apt-get install mysql-server-4.1
Reading Package Lists... Done
Building Dependency Tree... Done
mysql-server-4.1 is already the newest version.
You might want to run `apt-get -f install' to correct these:
The following packages have unmet dependencies:
  mysql-server-4.1: Depends: mysql-server-5.0 but it is not going to be installed
E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution).
superman:/#