libpthread problem in perl

[Paul Goyette <paul%whooppee.com@localhost>]

I just updated several systems from 4.99.67 to 4.99.72 and it seems that 
there's a bit of a libpthread problem.  Specifically, perl-5.8.8 has 
started aborting with the following error:

quicky:paul {109} zcat /var/log/authlog.1.gz | /etc/sshdict.perl
perl: Error detected by libpthread: Invalid mutex.
Detected by file "/build/src/lib/libpthread/pthread_mutex.c", line 141, 
function "pthread_mutex_destroy".
See pthread(3) for information.
Abort (core dumped)
quicky:paul {110}

The backtrace looks like this:

Core was generated by `perl'.
Program terminated with signal 6, Aborted.
#0  0x00007f7ffd232d1a in kill () from /usr/lib/libc.so.12
(gdb) bt
#0  0x00007f7ffd232d1a in kill () from /usr/lib/libc.so.12
#1  0x00007f7ffd50a754 in pthread__errorfunc () from 
/usr/lib/libpthread.so.0
#2  0x00007f7ffd508064 in pthread_mutex_destroy ()
   from /usr/lib/libpthread.so.0
#3  0x0000000000401b5d in main ()
(gdb)

The /etc/sshdict.perl script is available if anyone wants it, but all it 
does is scan its input for ssh dictionary attacks.

So, some questions:

1. Is this expected behavior?
2. If I reinstall perl from pkgsrc, will the problem go away?
3. If I reinstall, will I then have to reinstall all the p5-* packages?

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