-Perl 5.8.7 does not support shared subroutine references. Until this is
-fixed, if you use threaded mode, you need to use symbolic references (i.e.
-passing "main::cb" instead of \&cb). This rules out closures, lexical
-subs and that sort of thing, but it does seem to work.
+At time of writing, Perl (5.8.7) did not support shared subroutine references.
+Symptoms include a cryptic error message like "Invalid value for shared scalar"
+from Fuse.pm. Until this is fixed, if you use threaded mode, you need to use
+symbolic references (i.e. passing "main::cb" instead of \&cb). This doesn't
+allow things like closures, lexical subs and that sort of thing, but it does
+work for me.