synaptic crashes after 1 second all the time

[Hei Sann]

when I try to start the program, it starts with grayed out buttons, then it crashes and closes.

ProblemType: Crash
DistroRelease: Ubuntu 11.10
Package: synaptic 0.75.2ubuntu8
ProcVersionSignature: Ubuntu 3.0.0-12.20-generic 3.0.4
Uname: Linux 3.0.0-12-generic i686
ApportVersion: 1.23-0ubuntu3
Architecture: i386
CasperVersion: 1.287
Date: Tue Feb 28 13:58:07 2012
ExecutablePath: /usr/sbin/synaptic
LiveMediaBuild: Lubuntu 11.10 "Oneiric Ocelot" - Release i386 (20111012)
ProcCmdline: /usr/sbin/synaptic
ProcEnviron:
 SHELL=/bin/bash
 LANG=nb_NO.UTF-8
 PATH=(custom, no user)
SegvAnalysis:
 Segfault happened at: 0x300a410 <vfprintf+13024>: repnz scas %es:(%edi),%al
 PC (0x0300a410) ok
 source "%es:(%edi)" (0x267c212a) not located in a known VMA region (needed readable region)!
 destination "%al" ok
SegvReason: reading unknown VMA
Signal: 11
SourcePackage: synaptic
StacktraceTop:
 vfprintf () from /lib/i386-linux-gnu/libc.so.6
 __vasprintf_chk () from /lib/i386-linux-gnu/libc.so.6
 g_vasprintf () from /lib/i386-linux-gnu/libglib-2.0.so.0
 g_strdup_vprintf () from /lib/i386-linux-gnu/libglib-2.0.so.0
 g_strdup_printf () from /lib/i386-linux-gnu/libglib-2.0.so.0
Title: synaptic crashed with SIGSEGV in vfprintf()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:

[Apport retracing service (apport)]

Thank you for taking the time to report this crash and helping to make this software better. This particular crash has already been reported and is a duplicate of bug #940621, so is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Please continue to report any other bugs you may find.