libevent-rpc-perl contents:

-rw-r--r-- root/root      4056 2008-11-06 10:41 ./usr/share/man/man3/Event::RPC.3pm.gz
-rw-r--r-- root/root      3199 2008-11-06 10:41 ./usr/share/man/man3/Event::RPC::Loop.3pm.gz
-rw-r--r-- root/root      2611 2008-11-06 10:41 ./usr/share/man/man3/Event::RPC::Logger.3pm.gz
-rw-r--r-- root/root      2071 2008-11-06 10:41 ./usr/share/man/man3/Event::RPC::Message.3pm.gz
-rw-r--r-- root/root      7167 2008-11-06 10:41 ./usr/share/man/man3/Event::RPC::Server.3pm.gz
-rw-r--r-- root/root      4601 2008-11-06 10:41 ./usr/share/man/man3/Event::RPC::Client.3pm.gz
-rw-r--r-- root/root      2095 2008-11-06 10:41 ./usr/share/man/man3/Event::RPC::Loop::Glib.3pm.gz
-rw-r--r-- root/root      2057 2008-11-06 10:41 ./usr/share/man/man3/Event::RPC::LogConnection.3pm.gz
-rw-r--r-- root/root      2725 2008-11-06 10:41 ./usr/share/man/man3/Event::RPC::Connection.3pm.gz
-rw-r--r-- root/root      2098 2008-11-06 10:41 ./usr/share/man/man3/Event::RPC::Loop::Event.3pm.gz
-rw-r--r-- root/root      2176 2006-04-23 10:37 ./usr/share/perl5/Event/RPC/Loop/Event.pm
-rw-r--r-- root/root      2615 2006-04-23 10:37 ./usr/share/perl5/Event/RPC/Loop/Glib.pm
-rw-r--r-- root/root     14408 2008-10-25 10:31 ./usr/share/perl5/Event/RPC/Connection.pm
-rw-r--r-- root/root      3771 2006-04-23 10:37 ./usr/share/perl5/Event/RPC/Loop.pm
-rw-r--r-- root/root      3986 2006-04-23 10:37 ./usr/share/perl5/Event/RPC/Logger.pm
-rw-r--r-- root/root      3934 2006-04-23 10:37 ./usr/share/perl5/Event/RPC/Message.pm
-rw-r--r-- root/root     24248 2008-11-06 10:41 ./usr/share/perl5/Event/RPC/Server.pm
-rw-r--r-- root/root     19683 2008-10-25 10:32 ./usr/share/perl5/Event/RPC/Client.pm
-rw-r--r-- root/root       497 2006-02-27 15:33 ./usr/share/perl5/Event/RPC/AuthPasswdHash.pm
-rw-r--r-- root/root      1965 2006-04-23 10:34 ./usr/share/perl5/Event/RPC/LogConnection.pm
-rw-r--r-- root/root      5260 2008-10-25 10:35 ./usr/share/perl5/Event/RPC.pm
-rw-r--r-- root/root      1148 2008-11-06 10:41 ./usr/share/doc/libevent-rpc-perl/copyright
-rw-r--r-- root/root      2555 2008-10-26 11:28 ./usr/share/doc/libevent-rpc-perl/changelog.gz
-rwxr-xr-x root/root      2858 2005-12-18 15:01 ./usr/share/doc/libevent-rpc-perl/examples/client.pl
-rwxr-xr-x root/root      3061 2005-12-18 15:01 ./usr/share/doc/libevent-rpc-perl/examples/server.pl
-rw-r--r-- root/root       712 2005-04-14 18:25 ./usr/share/doc/libevent-rpc-perl/examples/ssl/server.csr
-rw-r--r-- root/root       977 2005-04-14 18:25 ./usr/share/doc/libevent-rpc-perl/examples/ssl/server.crt
-rw-r--r-- root/root       963 2005-04-14 18:25 ./usr/share/doc/libevent-rpc-perl/examples/ssl/server.key
-rw-r--r-- root/root      1030 2005-12-18 14:10 ./usr/share/doc/libevent-rpc-perl/examples/Test_class.pm
-rw-r--r-- root/root       923 2008-11-06 10:41 ./usr/share/doc/libevent-rpc-perl/changelog.Debian.gz

libevent-execflow-perl contents:

-rwxr-xr-x root/root       539 2010-01-15 13:35 ./usr/bin/execflow
-rw-r--r-- root/root      2685 2010-01-15 13:35 ./usr/share/man/man3/Event::ExecFlow::Frontend.3pm.gz
-rw-r--r-- root/root      2589 2010-01-15 13:35 ./usr/share/man/man3/Event::ExecFlow::Scheduler::SimpleMax.3pm.gz
-rw-r--r-- root/root      2718 2010-01-15 13:35 ./usr/share/man/man3/Event::ExecFlow::Scheduler.3pm.gz
-rw-r--r-- root/root      2878 2010-01-15 13:35 ./usr/share/man/man3/Event::ExecFlow::Job.3pm.gz
-rw-r--r-- root/root      2709 2010-01-15 13:35 ./usr/share/man/man3/Event::ExecFlow::Callbacks.3pm.gz
-rw-r--r-- root/root      2624 2010-01-15 13:35 ./usr/share/man/man3/Event::ExecFlow::Job::Command.3pm.gz
-rw-r--r-- root/root      3262 2010-01-15 13:35 ./usr/share/man/man3/Event::ExecFlow.3pm.gz
-rw-r--r-- root/root      2525 2010-01-15 13:35 ./usr/share/man/man3/Event::ExecFlow::Job::Code.3pm.gz
-rw-r--r-- root/root      2681 2010-01-15 13:35 ./usr/share/man/man3/Event::ExecFlow::Job::Group.3pm.gz
-rw-r--r-- root/root      2124 2007-04-13 21:35 ./usr/share/perl5/Event/ExecFlow/Frontend/Term.pm
-rw-r--r-- root/root      2525 2006-03-27 21:26 ./usr/share/perl5/Event/ExecFlow/Job/Code.pm
-rw-r--r-- root/root     16845 2009-12-19 12:25 ./usr/share/perl5/Event/ExecFlow/Job/Group.pm
-rw-r--r-- root/root      8576 2009-12-19 12:38 ./usr/share/perl5/Event/ExecFlow/Job/Command.pm
-rw-r--r-- root/root      2779 2006-02-27 15:31 ./usr/share/perl5/Event/ExecFlow/Scheduler/SimpleMax.pm
-rw-r--r-- root/root      3105 2006-02-27 15:31 ./usr/share/perl5/Event/ExecFlow/Frontend.pm
-rw-r--r-- root/root      2304 2006-04-02 14:18 ./usr/share/perl5/Event/ExecFlow/Scheduler.pm
-rw-r--r-- root/root     18276 2009-12-19 12:36 ./usr/share/perl5/Event/ExecFlow/Job.pm
-rw-r--r-- root/root      2985 2006-03-26 11:07 ./usr/share/perl5/Event/ExecFlow/Callbacks.pm
-rw-r--r-- root/root      3798 2009-12-19 12:46 ./usr/share/perl5/Event/ExecFlow.pm
-rw-r--r-- root/root      1262 2010-01-15 13:35 ./usr/share/doc/libevent-execflow-perl/copyright
-rw-r--r-- root/root       830 2009-12-19 12:47 ./usr/share/doc/libevent-execflow-perl/changelog.gz
-rw-r--r-- root/root       546 2010-01-15 13:35 ./usr/share/doc/libevent-execflow-perl/changelog.Debian.gz

I can't see any duplicate file.