gcalctool crashed with SIGSEGV in unit_convert_from()

[GodNobody]

Binary package hint: gcalctool

At the latest system update calculator just stopped working

ProblemType: Crash
DistroRelease: Ubuntu 11.04
Package: gcalctool 5.91.93-0ubuntu1
ProcVersionSignature: Ubuntu 2.6.38-7.39-generic 2.6.38
Uname: Linux 2.6.38-7-generic x86_64
Architecture: amd64
CrashCounter: 1
Date: Tue Mar 29 09:32:00 2011
ExecutablePath: /usr/bin/gcalctool
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Alpha amd64 (20110202)
ProcCmdline: gcalctool
ProcEnviron:
 LANGUAGE=de_DE:de:en_GB:en
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
SegvAnalysis:
 Segfault happened at: 0x426d8e <unit_convert_from+14>: mov 0x18(%rdi),%rax
 PC (0x00426d8e) ok
 source "0x18(%rdi)" (0x00000018) not located in a known VMA region (needed readable region)!
 destination "%rax" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: gcalctool
StacktraceTop:
 unit_convert_from ()
 unit_category_convert ()
 ?? ()
 ?? ()
 g_closure_invoke () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
Title: gcalctool crashed with SIGSEGV in unit_convert_from()
UpgradeStatus: Upgraded to natty on 2011-03-25 (3 days ago)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare

[Apport retracing service (apport)]

StacktraceTop:
 unit_convert_from (unit=0x0, x=0x7fffe2ed7a50, z=0x7fffe2ed3b80) at unit.c:136
 unit_category_convert (category=<value optimized out>, x=<value optimized out>, x_units=<value optimized out>, z_units=0xfff700, z=0x7fffe2ed5b00) at unit-category.c:100
 update_result_label (converter=0xf66130) at math-converter.c:72
 to_combobox_changed_cb (combo=<value optimized out>, converter=0xf66130) at math-converter.c:302
 g_closure_invoke (closure=0x1001480, return_value=0x0, n_param_values=1, param_values=0x1187380, invocation_hint=0x7fffe2ed9b70) at /build/buildd/glib2.0-2.28.4/./gobject/gclosure.c:767

[Philip Muškovac (yofel)]

Confirmed in Natty (same Stacktrace).

[Philip Muškovac (yofel)]

Forgot to add that It crashed when I tried to switch from simply to advanced mode from the menu.