first time
(gdb) bt
#0  0xffffe410 in __kernel_vsyscall ()
#1  0xb794a4eb in poll () from /lib/libc.so.6
#2  0xb7a09c83 in XProcessInternalConnection () from /usr/lib/libX11.so.6
#3  0xb7a0a091 in _XRead () from /usr/lib/libX11.so.6
#4  0xb7a0b3c9 in _XReadEvents () from /usr/lib/libX11.so.6
#5  0xb79f4f3a in XNextEvent () from /usr/lib/libX11.so.6
#6  0x080bceb4 in e_alert_show ()
#7  0x080a8616 in e_sigseg_act ()
#8  <signal handler called>
#9  0xb6dd60c4 in _mail_set_text ()
   from /usr/lib/enlightenment/modules/mail/linux-gnu-i686/module.so
#10 0xb6ddaa97 in _mail_mdir_add_mailbox ()
   from /usr/lib/enlightenment/modules/mail/linux-gnu-i686/module.so
#11 0xb7cba7a7 in ecore_file_monitor_poll_add ()
   from /usr/lib/libecore_file.so.1
#12 0xb7ca635c in _ecore_timer_call () from /usr/lib/libecore.so.1
#13 0xb7ca400b in ecore_main_fd_handler_add () from /usr/lib/libecore.so.1
#14 0xb7ca43c7 in ecore_main_loop_begin () from /usr/lib/libecore.so.1
#15 0x080634d2 in main ()

second time 

(gdb) bt
#0  0xffffe410 in __kernel_vsyscall ()
#1  0xb79864eb in poll () from /lib/libc.so.6
#2  0xb7a45c83 in XProcessInternalConnection () from /usr/lib/libX11.so.6
#3  0xb7a46091 in _XRead () from /usr/lib/libX11.so.6
#4  0xb7a473c9 in _XReadEvents () from /usr/lib/libX11.so.6
#5  0xb7a30f3a in XNextEvent () from /usr/lib/libX11.so.6
#6  0x080bceb4 in e_alert_show ()
#7  0x080a8616 in e_sigseg_act ()
#8  <signal handler called>
#9  0xb6e120c4 in _mail_set_text ()
   from /usr/lib/enlightenment/modules/mail/linux-gnu-i686/module.so
#10 0xb6e16a97 in _mail_mdir_add_mailbox ()
   from /usr/lib/enlightenment/modules/mail/linux-gnu-i686/module.so
#11 0xb7cf67a7 in ecore_file_monitor_poll_add ()
   from /usr/lib/libecore_file.so.1
#12 0xb7ce235c in _ecore_timer_call () from /usr/lib/libecore.so.1
#13 0xb7ce000b in ecore_main_fd_handler_add () from /usr/lib/libecore.so.1
#14 0xb7ce03c7 in ecore_main_loop_begin () from /usr/lib/libecore.so.1
#15 0x080634d2 in main ()