The "mgaapplet-upgrade-helper" program crashed. Drakbug-15.54 caught it.

Using Google Chrome at the time. I remember after a long period of downloading and installing I saw it stopped. 

I left clicked the blue arrow in the bottom panel and it seemed to download once more. I noticed it downloaded Kernel 3.8x and other files. Till your notification came up with the crash.

SEGV
Glibc's trace:
4: /usr/lib/perl5/5.14.2/x86_64-linux-thread-multi/CORE/libperl.so(Perl_sighandler+0x1f0) [0x7f5ca7985510]
5: /lib64/libpthread.so.0(+0xef70) [0x7f5ca6becf70]
6: /lib64/libharfbuzz.so.0(hb_buffer_add_utf8+0x3d0) [0x7f5c970175b0]
7: /usr/lib64/pango/1.8.0/modules/pango-basic-fc.so(+0x1b54) [0x7f5c972d0b54]
8: /usr/lib/../lib64/libpango-1.0.so.0(pango_shape+0x4a) [0x7f5ca07f018a]
9: /usr/lib/../lib64/libpango-1.0.so.0(+0xf9f1) [0x7f5ca07d39f1]
10: /usr/lib/../lib64/libpango-1.0.so.0(+0xfca9) [0x7f5ca07d3ca9]
11: /usr/lib/../lib64/libpango-1.0.so.0(+0x22677) [0x7f5ca07e6677]
12: /usr/lib/../lib64/libpango-1.0.so.0(+0x234c6) [0x7f5ca07e74c6]
13: /usr/lib/../lib64/libgtk-x11-2.0.so.0(+0x128aa1) [0x7f5c9f7c0aa1]
14: /usr/lib/../lib64/libgtk-x11-2.0.so.0(+0x12a3dd) [0x7f5c9f7c23dd]
15: /lib/../lib64/libgobject-2.0.so.0(g_cclosure_marshal_VOID__BOXEDv+0x8d) [0x7f5ca3d04fcd]
16: /lib/../lib64/libgobject-2.0.so.0(+0xfe3c) [0x7f5ca3d01e3c]
17: /lib/../lib64/libgobject-2.0.so.0(g_signal_emit_valist+0x421) [0x7f5ca3d1a711]
18: /lib/../lib64/libgobject-2.0.so.0(g_signal_emit_by_name+0x504) [0x7f5ca3d1b724]
19: /usr/lib/../lib64/libgtk-x11-2.0.so.0(+0x1a3473) [0x7f5c9f83b473]

Perl's trace:
standalone::bug_handler() called from /usr/lib/libDrakX/standalone.pm:224
standalone::__ANON__() called from /usr/lib/libDrakX/mygtk2.pm:1212
(eval)() called from /usr/lib/libDrakX/mygtk2.pm:1212
mygtk2::MagicWindow::AUTOLOAD() called from /usr/lib/libDrakX/ugtk2.pm:772
ugtk2::show() called from /usr/lib/libDrakX/ugtk2.pm:765
ugtk2::main() called from /usr/sbin/mgaapplet-upgrade-helper:115
main::run_gurpmi() called from /usr/sbin/mgaapplet-upgrade-helper:436
main::upgrade() called from /usr/sbin/mgaapplet-upgrade-helper:75

Theme name: oxygen-gtk
Kernel version = 3.4.45-desktop-1.mga2
Distribution=Mageia release 3 (Official) for x86_64
CPU=Pentium(R) Dual-Core  CPU      E5800  @ 3.20GHz