midori crashed with SIGSEGV in deref()

[Benjamin]

crashed after login in a page with java success

ProblemType: Crash
DistroRelease: Ubuntu 12.04
Package: midori 0.4.3-1
ProcVersionSignature: Ubuntu 3.2.0-14.23-generic 3.2.3
Uname: Linux 3.2.0-14-generic i686
ApportVersion: 1.91-0ubuntu1
Architecture: i386
Date: Mon Feb 6 11:29:52 2012
EcryptfsInUse: Yes
ExecutablePath: /usr/bin/midori
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha i386 (20111129.1)
ProcCmdline: midori
SegvAnalysis:
 Segfault happened at: 0x139f8ac6 <_ZN3JSC9Structure7destroyEPNS_6JSCellE+118>: mov (%eax),%edx
 PC (0x139f8ac6) ok
 source "(%eax)" (0x00000000) not located in a known VMA region (needed readable region)!
 destination "%edx" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: midori
StacktraceTop:
 JSC::Structure::destroy(JSC::JSCell*) () from /usr/lib/libjavascriptcoregtk-1.0.so.0
 JSC::MarkedBlock::sweep(JSC::MarkedBlock::SweepMode) () from /usr/lib/libjavascriptcoregtk-1.0.so.0
 JSC::Heap::sweep() () from /usr/lib/libjavascriptcoregtk-1.0.so.0
 JSC::Heap::collect(JSC::Heap::SweepToggle) () from /usr/lib/libjavascriptcoregtk-1.0.so.0
 JSC::Heap::collectAllGarbage() () from /usr/lib/libjavascriptcoregtk-1.0.so.0
Title: midori crashed with SIGSEGV in JSC::Structure::destroy()
UpgradeStatus: Upgraded to precise on 2012-02-06 (0 days ago)
UserGroups: adm cdrom dip lpadmin mythtv plugdev sambashare sudo

[Apport retracing service (apport)]

StacktraceTop:
 deref (this=0x0) at ../Source/JavaScriptCore/wtf/text/StringImpl.h:388
 ~PropertyTable (this=0xadee07f8, __in_chrg=<optimized out>) at ../Source/JavaScriptCore/runtime/PropertyMapHashTable.h:300
 deleteOwnedPtr<JSC::PropertyTable> (ptr=0xadee07f8) at ../Source/JavaScriptCore/wtf/OwnPtrCommon.h:54
 ~OwnPtr (this=0xadeaef74, __in_chrg=<optimized out>) at ../Source/JavaScriptCore/wtf/OwnPtr.h:55
 ~Structure (this=0xadeaef40, __in_chrg=<optimized out>) at ../Source/JavaScriptCore/runtime/Structure.h:53

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.