=item *
-XXX
+When an object has many weak references to it, freeing that object
+can under some some circumstances take O(N^2) time to free (where N is the
+number of references). The number of circumstances has been reduced.
+L<[perl #75254]|http://rt.perl.org/rt3/Public/Bug/Display.html?id=75254>.
=back
C<formline> no longer crashes when passed a tainted format picture
L<[perl #79138]|http://rt.perl.org/rt3/Public/Bug/Display.html?id=79138>.
+=item *
+
+A signal handler called within a signal handler could cause leaks or
+double-frees. Now fixed.
+L<[perl #76248]|http://rt.perl.org/rt3/Public/Bug/Display.html?id=76248>.
+
=back
=head1 Known Problems