buildd: Unmet build dependencies: debhelper (>= 4.0.0)

["Shaun Jackman" <sjackman@gmail.com>]

Why is the buildd not finding debhelper?

Thanks,
Shaun

http://buildd.debian.org/build.php?&pkg=monotone&ver=0.31-3&arch=powerpc&file=log

Automatic build of monotone_0.31-3 on malo by sbuild/powerpc 99.99
Build started at 20061205-2149
...
** Using build dependencies supplied by package:
Build-Depends: cdbs (>= 0.4.28), debhelper (>= 4.0.0), autotools-dev,
libboost-date-time-dev, libboost-filesystem-dev, libboost-regex-dev,
libboost-test-dev, libboost-dev, libz-dev
...
debhelper: already installed (5.0.42 >= 4.0.0 is satisfied)
...
Recommended packages:
 debhelper
...
dpkg-checkbuilddeps: Unmet build dependencies: debhelper (>= 4.0.0)
dpkg-buildpackage: Build dependencies/conflicts unsatisfied; aborting.
dpkg-buildpackage: (Use -d flag to override.)
******************************************************************************
Build finished at 20061205-2150
FAILED [dpkg-buildpackage died]
Purging chroot-unstable/build/buildd/monotone-0.31
...