.
Thread 1 (process 6641):
#0  0x2f736576 in ?? ()
#1  0xb7a2b7f3 in xcall_QGroupBox () from /usr/lib/libsmokeqt.so.1
#2  0xb7c579e2 in smokeperl_free () from /usr/lib/perl5/auto/Qt/Qt.so
#3  0x080b1cae in Perl_mg_free ()
#4  0x080cabe8 in Perl_sv_clear ()
#5  0x080cb1c7 in Perl_sv_free ()
#6  0x080cace7 in Perl_sv_clear ()
#7  0x080cb1c7 in Perl_sv_free ()
#8  0x080b8499 in Perl_hv_free_ent ()
#9  0x080b85f7 in ?? ()
#10 0x0814f008 in ?? ()
#11 0x08cf5504 in ?? ()
#12 0x08c52670 in ?? ()
#13 0x08cd3238 in ?? ()
#14 0x0814f008 in ?? ()
#15 0x08a5e188 in ?? ()
#16 0x00000007 in ?? ()
#17 0x08cf5504 in ?? ()
#18 0x08cf5504 in ?? ()
#19 0x08c3d4c0 in ?? ()
#20 0xbfdd7058 in ?? ()
#21 0x080ba329 in Perl_hv_undef ()
Backtrace stopped: frame did not save the PC