Application that crashed: kile
Version of the application: 2.0.81
KDE Version: 4.2.96 (KDE 4.2.96 (KDE 4.3 RC2))
Qt Version: 4.5.0
Operating System: Linux 2.6.28-13-generic x86_64
Distribution: Ubuntu 9.04

What I was doing when the application crashed:
Every time I close the window, independently to the file or what I've done.

 -- Backtrace:
Application: Kile (kile), signal: Segmentation fault
[KCrash Handler]
#5  0x000000300b5d6980 in ~QX11WindowSurface (this=<value optimized out>) at painting/qwindowsurface_x11.cpp:84
#6  0x000000300b5d0058 in ~QWidgetBackingStore (this=<value optimized out>) at painting/qbackingstore.cpp:828
#7  0x000000300b41d5d5 in QWidgetPrivate::deleteExtra (this=<value optimized out>) at kernel/qwidget.cpp:1503
#8  0x000000300b41dd6d in ~QWidgetPrivate (this=<value optimized out>) at kernel/qwidget.cpp:224
#9  0x000000300b80a0a3 in ~QMenuPrivate (this=<value optimized out>) at widgets/qmenu_p.h:151
#10 0x000000300936c80b in ~QObject (this=<value optimized out>) at kernel/qobject.cpp:865
#11 0x000000300b422d6f in ~QWidget (this=<value optimized out>) at kernel/qwidget.cpp:1386
#12 0x000000300b800fd9 in ~QMenu (this=<value optimized out>) at widgets/qmenu.cpp:1373
#13 0x00007f640d74904b in ~KMenu (this=0x2fb8790) at /build/buildd/kde4libs-4.2.96/kdeui/widgets/kmenu.cpp:175
#14 0x00007f640d5af0ca in ~KSelectAction (this=0x2fb8040) at /build/buildd/kde4libs-4.2.96/kdeui/actions/kselectaction.cpp:100
#15 0x000000000059d350 in _start ()

Reported using DrKonqi