If it can help to narrow the bug i launch it using gdb (thks to google for that) :


(gdb) r /usr/share/backintime/kde4/app.py
Starting program: /usr/bin/python /usr/share/backintime/kde4/app.py
Missing separate debug info for /usr/lib64/libz.so.1
Missing separate debug info for /usr/lib64/libpcre.so.0

Program received signal SIGSEGV, Segmentation fault.
0x00007f87e3c08f56 in ?? () from /usr/lib64/python2.6/site-packages/sip.so
(gdb) bt
#0  0x00007f87e3c08f56 in ?? () from /usr/lib64/python2.6/site-packages/sip.so
#1  0x00007f87e34f6e5b in initkdecore () at sipkdecorepart0.cpp:4811
#2  0x00007f87eaf30a46 in _PyImport_LoadDynamicModule (name=0x7fffc101f8e0 "PyKDE4.kdecore",
    pathname=0x7fffc101e810 "/usr/lib64/python2.6/site-packages/PyKDE4/kdecore.so", fp=<value optimized out>) at Python/importdl.c:53
#3  0x00007f87eaf2ec19 in import_submodule (mod=0x7f87ea211e88, subname=0x7fffc101f8e7 "kdecore", fullname=0x7fffc101f8e0 "PyKDE4.kdecore") at Python/import.c:2545
#4  0x00007f87eaf2eeb2 in load_next (mod=0x7f87ea211e88, altmod=0x7f87ea211e88, p_name=<value optimized out>, buf=0x7fffc101f8e0 "PyKDE4.kdecore",
    p_buflen=0x7fffc101f8d8) at Python/import.c:2365
#5  0x00007f87eaf2f558 in import_module_level (name=0x0, globals=<value optimized out>, locals=<value optimized out>, fromlist=0x7f87eb3cdd10,
    level=<value optimized out>) at Python/import.c:2094
#6  0x00007f87eaf2faa5 in PyImport_ImportModuleLevel (name=0x7f87eb30b78c "PyKDE4.kdecore", globals=0x11769d0, locals=0x11769d0, fromlist=0x7f87eb3cdd10, level=-1)
    at Python/import.c:2138
#7  0x00007f87eaf1545d in builtin___import__ (self=<value optimized out>, args=<value optimized out>, kwds=<value optimized out>) at Python/bltinmodule.c:48
#8  0x00007f87eae87268 in PyObject_Call (func=0x7f87eb3acea8, arg=0x7f87eb2fbec0, kw=0x0) at Objects/abstract.c:2487
#9  0x00007f87eaf15a26 in PyEval_CallObjectWithKeywords (func=0x7f87eb3acea8, arg=0x7f87eb2fbec0, kw=0x0) at Python/ceval.c:3548
#10 0x00007f87eaf18e55 in PyEval_EvalFrameEx (f=0x120c9c0, throwflag=<value optimized out>) at Python/ceval.c:2124
#11 0x00007f87eaf1d369 in PyEval_EvalCodeEx (co=0x7f87eb318468, globals=<value optimized out>, locals=<value optimized out>, args=0x0, argcount=0, kws=0x0,
    kwcount=0, defs=0x0, defcount=0, closure=0x0) at Python/ceval.c:2942
#12 0x00007f87eaf1d472 in PyEval_EvalCode (co=0x7f87e380a3a0, globals=0x7f87e3812c80, locals=0x1449260) at Python/ceval.c:515
#13 0x00007f87eaf38061 in run_mod (mod=<value optimized out>, filename=<value optimized out>, globals=0x11769d0, locals=0x11769d0, flags=<value optimized out>,
    arena=<value optimized out>) at Python/pythonrun.c:1330
#14 0x00007f87eaf38136 in PyRun_FileExFlags (fp=0x1176c10, filename=0x7fffc1022f82 "/usr/share/backintime/kde4/app.py", start=257, globals=0x11769d0,
    locals=0x11769d0, closeit=1, flags=0x7fffc1020e90) at Python/pythonrun.c:1316
#15 0x00007f87eaf396bd in PyRun_SimpleFileExFlags (fp=0x1176c10, filename=0x7fffc1022f82 "/usr/share/backintime/kde4/app.py", closeit=1, flags=0x7fffc1020e90)
    at Python/pythonrun.c:926
#16 0x00007f87eaf45ceb in Py_Main (argc=1, argv=0x7fffc1020fb8) at Modules/main.c:597
#17 0x00007f87ea8e691d in __libc_start_main (main=<value optimized out>, argc=<value optimized out>, ubp_av=<value optimized out>, init=<value optimized out>,
    fini=<value optimized out>, rtld_fini=<value optimized out>, stack_end=0x7fffc1020fa8) at libc-start.c:220
#18 0x0000000000400639 in _start () at ../sysdeps/x86_64/elf/start.S:113

Regards,