Received this crash on exit after creating a curve with piolib source, 
creating an equation that was a sum of powers of sin(k*x), and creating a PSD 
of the equation.  (also editted the equation a few times) 
 
[New Thread 1024 (LWP 468)] 
0x0de26ab8 in wait4 () at soinit.c:76 
	in soinit.c 
#0  0x0de26ab8 in wait4 () at soinit.c:76 
#1  0x0de26a6c in __libc_waitpid (pid=512, stat_loc=0x0, options=0) 
    at ../sysdeps/unix/sysv/linux/waitpid.c:26 
#2  0x0e073748 in waitpid (pid=21839, stat_loc=0x0, options=0) 
    at wrapsyscall.c:173 
#3  0x0f61f6d8 in KCrash::defaultCrashHandler (sig=11) at kcrash.cpp:246 
#4  0x0e070814 in pthread_sighandler (signo=11, ctx=0x7fffe910) at 
signals.c:97 
#5  <signal handler called> 
#6  KstDoc::update (this=0x101a36b0, force=false) 
    at /opt/kde3/include/ksharedptr.h:149 
#7  0x100ada48 in KstDoc::update (this=0x1011a2ec, force=269658264) 
    at kstdoc.cpp:447 
#8  0x100b5a64 in KstApp::qt_invoke (this=0x10198240, _id=91, _o=0x7fffef48) 
    at kst.moc:205 
#9  0x0eb5f538 in QObject::activate_signal (this=0x1038df28, clist=0x1038a038,  
    o=0x7fffef48) at kernel/qobject.cpp:2333 
#10 0x0eb5f0e0 in QObject::activate_signal (this=0x1038df28, signal=2) 
    at kernel/qobject.cpp:2302 
#11 0x0f02a66c in QTimer::timeout (this=0x1038df28) 
    at .moc/debug-shared-mt/moc_qtimer.cpp:82 
#12 0x0eb9653c in QTimer::event (this=0x1038df28, e=0x7ffff248) 
    at kernel/qtimer.cpp:219 
#13 0x0eac4098 in QApplication::internalNotify (this=0x7ffff490,  
    receiver=0x1038df28, e=0x7ffff248) at kernel/qapplication.cpp:2582 
#14 0x0eac326c in QApplication::notify (this=0x7ffff490, receiver=0x1038df28,  
    e=0x7ffff248) at kernel/qapplication.cpp:2305 
#15 0x0f57a574 in KApplication::notify (this=0x7ffff490, receiver=0x1038df28,  
    event=0x7ffff248) at kapplication.cpp:506 
#16 0x0f018c10 in QApplication::sendEvent (receiver=0x1038df28,  
    event=0x7ffff248) at .moc/debug-shared-mt/../../kernel/qapplication.h:492 
#17 0x0eaa8f8c in QEventLoop::activateTimers (this=0x101682e0) 
    at kernel/qeventloop_unix.cpp:557 
#18 0x0ea481fc in QEventLoop::processEvents (this=0x101682e0, flags=4) 
    at kernel/qeventloop_x11.cpp:346 
#19 0x0eae8288 in QEventLoop::enterLoop (this=0x101682e0) 
    at kernel/qeventloop.cpp:198 
#20 0x0eae80e8 in QEventLoop::exec (this=0x101682e0) 
    at kernel/qeventloop.cpp:145 
#21 0x0eac44b4 in QApplication::exec (this=0x7ffff490) 
    at kernel/qapplication.cpp:2705 
#22 0x100b9c5c in main (argc=1, argv=0x7ffff884) at main.cpp:595 
#23 0x0dd9bf70 in __libc_start_main (argc=1, ubp_av=0x7ffff884,  
    ubp_ev=0x7fffe548, auxvec=0x7ffff928, rtld_fini=0, stinfo=0x100eede0,  
    stack_on_entry=0x7fffedf0) at ../sysdeps/powerpc/elf/libc-start.c:119 
Current language:  auto; currently c