postfix broken in 5.0.2?

[steve%prd.co.uk@localhost (Steve Blinkhorn)]

Undefined symbol "ber_pvt_opt_on" referenced from COPY relocation in 
/usr/sbin/postconf

So far as I can work out with the help of Lord Google this is not a
problem directly with postfix code but looks as though it relates to
ldap libraries, possibly via Python.

I'm out of my depth here, but email on that machine worked under 4.0
and doesn't work now.

-- 
Steve Blinkhorn <steve%prd.co.uk@localhost>