fedora 11 (kde 4.2.4)
backintime crashes somtimes here too, but not every time i run it and the snapshot seems ok
it seems not to crash if i run it from the gui
it seems to crash every time it was started from cron

but its the first backup program i really like

[user@linuxbox ~]$ backintime-kde4 -b
Back In Time                          
Version: 0.9.26                       

Back In Time comes with ABSOLUTELY NO WARRANTY.
This is free software, and you are welcome to redistribute it
under certain conditions; type `backintime-kde4 --license' for details.

INFO: Lock
INFO: Include folders: ['/home/user']
INFO: Ignore folders: []
INFO: Last snapshots: {}
INFO: [KDE4Plugin.Systray.run]
INFO: Compare with old snapshot: 20090724-182501
WARNING: QApplication was not created in the main() thread.
INFO: [KDE4Plugin.Systray.run] begin loop
Exception in thread Thread-1:
Traceback (most recent call last):
  File "/usr/lib/python2.6/threading.py", line 522, in __bootstrap_inner
    self.run()
  File "/usr/share/backintime/plugins/kde4plugin.py", line 99, in run
    message = ( 0, _('Working...') )
NameError: global name '_' is not defined

INFO: Command "rsync -aEAX  -i --dry-run  --chmod=Fa-w,D+w --whole-file --delete  --exclude="/home/ext/backintime" --exclude="/home/user/.local/share/backintime" --include="/home/user/" --include="/home/" --exclude="/home/user/exclude" --include="/home/user/**" --exclude="*" / "/home/ext/backintime/backintime/20090724-182501/backup/"" returns 0
INFO: Create hard-links
INFO: Command "cp -al "/home/ext/backintime/backintime/20090724-182501/backup/"* "/home/ext/backintime/backintime/new_snapshot/backup/"" returns 0
INFO: Call rsync to take the snapshot
INFO: Command "rsync -aEAX  -v --delete-excluded  --chmod=Fa-w,D+w --whole-file --delete  --exclude="/home/ext/backintime" --exclude="/home/user/.local/share/backintime" --include="/home/user/" --include="/home/" --exclude="/home/user/exclude" --include="/home/user/**" --exclude="*" / "/home/ext/backintime/backintime/new_snapshot/backup/"" returns 0
INFO: Save permissions
INFO: Remove backups older than: 19990724-000000
INFO: Keep min free disk space: 1024 Mb
INFO: Unlock
KCrash: Application 'app.py' crashing...
sock_file=/home/user/.kde/socket-linuxbox/kdeinit4__0

************************************************************
now Kde bug reportig window pops up:
************************************************************

A Fatal Error Occurred
The application Back In Time (app.py) crashed and caused the signal 11 (SIGSEGV).
Please help us improve the software you use by filing a report at http://bugs.kde.org. Useful details include how to reproduce the error, documents that were loaded, etc.

Application: Back In Time (app.py), signal SIGSEGV
[Current thread is 1 (Thread 0xb7f996c0 (LWP 5910))]

Thread 1 (Thread 0xb7f996c0 (LWP 5910)):
[KCrash Handler]
#6  0x054a982c in QWidget::metric(QPaintDevice::PaintDeviceMetric) const () from /usr/lib/libQtGui.so.4
#7  0x0563b23b in QFont::QFont(QFont const&, QPaintDevice*) () from /usr/lib/libQtGui.so.4
#8  0x0546a187 in QWidgetPrivate::updateFont(QFont const&) () from /usr/lib/libQtGui.so.4
#9  0x0546a0b8 in QWidgetPrivate::resolveFont() () from /usr/lib/libQtGui.so.4
#10 0x05474808 in QWidget::setParent(QWidget*, QFlags<Qt::WindowType>) () from /usr/lib/libQtGui.so.4
#11 0x05474f7e in QWidget::setParent(QWidget*) () from /usr/lib/libQtGui.so.4
#12 0x0547bf86 in QWidgetAction::releaseWidget(QWidget*) () from /usr/lib/libQtGui.so.4
#13 0x058921d2 in QMenu::~QMenu() () from /usr/lib/libQtGui.so.4
#14 0x03bc287f in KMenu::~KMenu() () from /usr/lib/libkdeui.so.5
#15 0x03b6704d in KSystemTrayIcon::~KSystemTrayIcon() () from /usr/lib/libkdeui.so.5
#16 0x072dd091 in sipKSystemTrayIcon::~sipKSystemTrayIcon() () from /usr/lib/python2.6/site-packages/PyKDE4/kdeui.so
#17 0x072b7090 in ?? () from /usr/lib/python2.6/site-packages/PyKDE4/kdeui.so
#18 0x072b70df in ?? () from /usr/lib/python2.6/site-packages/PyKDE4/kdeui.so
#19 0x0030a893 in PyDict_New () from /usr/lib/python2.6/site-packages/sip.so
#20 0x001981cd in ?? () from /usr/lib/libpython2.6.so.1.0
#21 0x00174e34 in ?? () from /usr/lib/libpython2.6.so.1.0
#22 0x00198155 in ?? () from /usr/lib/libpython2.6.so.1.0
#23 0x00174e34 in ?? () from /usr/lib/libpython2.6.so.1.0
#24 0x0014bedb in ?? () from /usr/lib/libpython2.6.so.1.0
#25 0x0016aa09 in ?? () from /usr/lib/libpython2.6.so.1.0
#26 0x00174e34 in ?? () from /usr/lib/libpython2.6.so.1.0
#27 0x0014bedb in ?? () from /usr/lib/libpython2.6.so.1.0
#28 0x00177094 in PyDict_Clear () from /usr/lib/libpython2.6.so.1.0
#29 0x0017714d in ?? () from /usr/lib/libpython2.6.so.1.0
#30 0x001ff720 in ?? () from /usr/lib/libpython2.6.so.1.0
#31 0x001fff1f in PyGC_Collect () from /usr/lib/libpython2.6.so.1.0
#32 0x001f0c80 in Py_Finalize () from /usr/lib/libpython2.6.so.1.0
#33 0x001f0da7 in Py_Exit () from /usr/lib/libpython2.6.so.1.0
#34 0x001f0ef3 in ?? () from /usr/lib/libpython2.6.so.1.0
#35 0x001f10fd in PyErr_PrintEx () from /usr/lib/libpython2.6.so.1.0
#36 0x001f134e in PyErr_Print () from /usr/lib/libpython2.6.so.1.0
#37 0x001f1621 in PyRun_SimpleFileExFlags () from /usr/lib/libpython2.6.so.1.0
#38 0x001f1daa in PyRun_AnyFileExFlags () from /usr/lib/libpython2.6.so.1.0
#39 0x001fe592 in Py_Main () from /usr/lib/libpython2.6.so.1.0
#40 0x080485c7 in main ()


if you need more info please tell