#0  0x000000080283d92d in pthread_mutex_destroy () from /lib/libthr.so.3
#1  0x0000000801a15a15 in xmlFreeMutex () from /usr/local/lib/libxml2.so.5
#2  0x0000000801a15455 in xmlCleanupGlobals () from /usr/local/lib/libxml2.so.5
#3  0x00000008019ade8a in xmlCleanupParser () from /usr/local/lib/libxml2.so.5
#4  0x000000080184edb3 in XS_XML__LibXML_END () from /usr/local/lib/perl5/site_perl/5.10.1/mach/auto/XML/LibXML/LibXML.so
#5  0x00000008006df1f4 in Perl_pp_entersub () from /usr/local/lib/perl5/5.10.1/mach/CORE/libperl.so
#6  0x000000080068c0b0 in Perl_call_sv () from /usr/local/lib/perl5/5.10.1/mach/CORE/libperl.so
#7  0x000000080068c3c3 in Perl_call_list () from /usr/local/lib/perl5/5.10.1/mach/CORE/libperl.so
#8  0x000000080068fe5f in perl_destruct () from /usr/local/lib/perl5/5.10.1/mach/CORE/libperl.so
#9  0x0000000000400bcc in main ()