kpackagekit crashed with SIGSEGV in malloc()

Binary package hint: kpackagekit

kpackagekit crashed while trying to install kstars through it

ProblemType: Crash
DistroRelease: Ubuntu 11.04
Package: kpackagekit 0.6.3.3-0ubuntu2
ProcVersionSignature: Ubuntu 2.6.38-6.34-generic 2.6.38-rc7
Uname: Linux 2.6.38-6-generic x86_64
Architecture: amd64
Date: Mon Mar 14 22:02:48 2011
ExecutablePath: /usr/bin/kpackagekit
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007)
ProcCmdline: /usr/bin/kpackagekit
ProcEnviron:
 LANGUAGE=en_IN:en
 LANG=en_IN
 LC_MESSAGES=en_IN.UTF-8
 SHELL=/bin/bash
SegvAnalysis:
 Segfault happened at: 0x7f0ee1fc5299 <malloc+105>: callq 0x7f0ee1fc2250
 PC (0x7f0ee1fc5299) ok
 source "0x7f0ee1fc2250" (0x7f0ee1fc2250) ok
 destination "(%rsp)" (0x7ffffaefd000) not located in a known VMA region (needed writable region)!
 Stack memory exhausted (SP below stack segment)
SegvReason: writing unknown VMA
Signal: 11
SourcePackage: kpackagekit
StacktraceTop:
 malloc () from /lib/libc.so.6
 QString::fromLatin1_helper(char const*, int) () from /usr/lib/libQtCore.so.4
 QString::fromAscii_helper(char const*, int) () from /usr/lib/libQtCore.so.4
 QString PackageKit::Util::enumToString<PackageKit::Enum>(int, char const*, QString const&) () from /usr/lib/libpackagekit-qt.so.14
 PackageKit::Transaction::searchGroups(QSet<PackageKit::Enum::Group>, QFlags<PackageKit::Enum::Filter>) () from /usr/lib/libpackagekit-qt.so.14
Title: kpackagekit crashed with SIGSEGV in malloc()
UpgradeStatus: Upgraded to natty on 2011-03-10 (4 days ago)
UserGroups: adm admin cdrom dialout lpadmin netdev plugdev sambashare
XsessionErrors:
 (knotify4:2048): GStreamer-CRITICAL **: gst_debug_add_log_function: assertion `func != NULL' failed
 (evolution:2525): libebook-WARNING **: e-book.c:3095: cannot get book from factory: Invalid source