nocpulse-common-2.1.22 uses perl(RHN::DB): /perl-API/NOCpulse/NOCpulseini.pm:8:use RHN::DB; which is exported to binary package as run-time dependency: $ repoquery --repoid dist-f16 --require 'nocpulse-common' |sort /bin/sh httpd openssh perl(base) perl(Carp) perl(DBI) perl(IO::AtomicFile) perl(LWP::UserAgent) perl(:MODULE_COMPAT_5.12.3) perl(RHN::DB) ← perl(strict) perl(Test::Unit::TestCase) perl(vars) /sbin/runuser /usr/bin/perl /usr/sbin/useradd but perl(RHN::DB) is not provided by any package in Fedora 16.
nocpulse-common-2.1.22-3.fc16 can be installed now because perl(RHN::DB) is provides by spacewalk-base-minimal-1.6.18-1.fc16 now.
Oops. spacewalk-base-minimal-1.6.18-1.fc16 is not stable in F16 yet. One can close this bug report once the package gets stable.
nocpulse-common-2.1.22-3.fc16 is installable now.