debian source package fails build tests

[David Stainton]

Greetings,

I downloaded the percona lenny source package and tried to build it on lenny.
When building this debian package from source
(http://www.percona.com/downloads/Percona-Server-5.1/Percona-Server-5.1.51-11.5/deb/lenny/x86_64/percona-server-dfsg-5.1_5.1.51-11.5-132.lenny.tar.gz)
I noticed that it failed 4 tests and would NOT create the debian
package:

Failing test(s): main.percona_query_cache_with_comments
main.percona_slave_innodb_stats main.percona_log_slow_slave_statements
main.percona_log_slow_slave_statements-and-use_global_long_query_time

I suspect these tests are broken.
I built the debian package by skipping all tests like this:
DEB_BUILD_OPTIONS=nocheck dpkg-buildpackage -uc -tc -rfakeroot

Does anyone have a similar experience when building percona debian packages?
Why would these tests fail?
Should I submit a bug on the percona launchpad?

David