I can confirm this behaviour on Debian Unstable AMD64... Here's my backtrace from a fmit recompiled with noopt, nostrip...
(gdb) run Starting program: /usr/bin/fmit [Thread debugging using libthread_db enabled] [New Thread 47696063954800 (LWP 26354)] Free Music Instrument Tuner version 0.96.5 built at Nov 27 2006 01:03:22 Install directory '/usr' Qt: gdb: -nograb added to command-line options. Use the -dograb option to enforce grabbing. CaptureThread: INFO: Built in transports CaptureThread: INFO: JACK unavailable CaptureThread: INFO: ALSA available libGL warning: 3D driver claims to not support visual 0x4b CaptureThread: INFO: Auto detecting a working transport ... using ALSA CaptureThread: INFO: ALSA: try to set format to Signed 16 bit Little Endian success CaptureThread: WARNING: ALSA: cannot set channel count to one. channels will be mixed CaptureThread: INFO: ALSA: try to set sampling rate to 96000 failed CaptureThread: INFO: ALSA: try to set sampling rate to 48000 success [New Thread 1082132832 (LWP 26357)] Try R300_SPAN_DISABLE_LOCKING env var if this hangs. CaptureThread: WARNING: ALSA: cannot set channel count to one. channels will be mixed *** glibc detected *** malloc(): memory corruption: 0x00000000025ac840 *** Program received signal SIGABRT, Aborted. [Switching to Thread 1082132832 (LWP 26357)] 0x00002b6119a9507b in raise () from /lib/libc.so.6 (gdb) bt #0 0x00002b6119a9507b in raise () from /lib/libc.so.6 #1 0x00002b6119a9684e in abort () from /lib/libc.so.6 #2 0x00002b6119acb5e9 in __libc_message () from /lib/libc.so.6 #3 0x00002b6119ad2842 in _int_malloc () from /lib/libc.so.6 #4 0x00002b6119ad415d in malloc () from /lib/libc.so.6 #5 0x00002b611969293d in operator new () from /usr/lib/libstdc++.so.6 #6 0x0000000000414f7d in CaptureThreadImplALSA::capture_loop () #7 0x0000000000412714 in CaptureThread::run () #8 0x00002b6118e8808a in QThreadInstance::start () from /usr/lib/libqt-mt.so.3 #9 0x00002b61189d9f1a in start_thread () from /lib/libpthread.so.0 #10 0x00002b6119b2f612 in clone () from /lib/libc.so.6 #11 0x0000000000000000 in ?? () (gdb) (gdb) thread apply all bt Thread 2 (Thread 1082132832 (LWP 26357)): #0 0x00002b6119a9507b in raise () from /lib/libc.so.6 #1 0x00002b6119a9684e in abort () from /lib/libc.so.6 #2 0x00002b6119acb5e9 in __libc_message () from /lib/libc.so.6 #3 0x00002b6119ad2842 in _int_malloc () from /lib/libc.so.6 #4 0x00002b6119ad415d in malloc () from /lib/libc.so.6 #5 0x00002b611969293d in operator new () from /usr/lib/libstdc++.so.6 #6 0x0000000000414f7d in CaptureThreadImplALSA::capture_loop () #7 0x0000000000412714 in CaptureThread::run () #8 0x00002b6118e8808a in QThreadInstance::start () from /usr/lib/libqt-mt.so.3 #9 0x00002b61189d9f1a in start_thread () from /lib/libpthread.so.0 #10 0x00002b6119b2f612 in clone () from /lib/libc.so.6 #11 0x0000000000000000 in ?? () Thread 1 (Thread 47696063954800 (LWP 26354)): #0 0x00002b6119af7de5 in __nanosleep_nocancel () from /lib/libc.so.6 #1 0x00002b6119af7c04 in sleep () from /lib/libc.so.6 #2 0x00002b611bb725f1 in radeonInitSpanFuncs () from /usr/lib/dri/r300_dri.so #3 0x00002b611bc4c3d1 in _swrast_Bitmap () from /usr/lib/dri/r300_dri.so #4 0x00002b611bcac3b8 in _mesa_Bitmap () from /usr/lib/dri/r300_dri.so #5 0x00002b61178e06b5 in glutBitmapCharacter () from /usr/lib/libglut.so.3 #6 0x000000000042fb88 in GLErrorHistory::paintGL () #7 0x00002b611916b262 in QGLWidget::glDraw () from /usr/lib/libqt-mt.so.3 #8 0x00002b611916a584 in QGLWidget::paintEvent () from /usr/lib/libqt-mt.so.3 #9 0x00002b6118f285c7 in QWidget::event () from /usr/lib/libqt-mt.so.3 #10 0x00002b6118e8f212 in QApplication::internalNotify () from /usr/lib/libqt-mt.so.3 #11 0x00002b6118e91acb in QApplication::notify () from /usr/lib/libqt-mt.so.3 #12 0x00002b6118e22824 in QApplication::sendSpontaneousEvent () from /usr/lib/libqt-mt.so.3 #13 0x00002b6118e1245c in QETWidget::translatePaintEvent () from /usr/lib/libqt-mt.so.3 #14 0x00002b6118e1f939 in QApplication::x11ProcessEvent () from /usr/lib/libqt-mt.so.3 #15 0x00002b6118e3586a in QEventLoop::processEvents () from /usr/lib/libqt-mt.so.3 #16 0x00002b6118ea879e in QEventLoop::enterLoop () from /usr/lib/libqt-mt.so.3 #17 0x00002b6118ea85a7 in QEventLoop::exec () from /usr/lib/libqt-mt.so.3 #18 0x00002b6118e90cf0 in QApplication::exec () from /usr/lib/libqt-mt.so.3 #19 0x0000000000420f95 in main () #0 0x00002b6119a9507b in raise () from /lib/libc.so.6 (gdb) Regards, Andreas Henriksson -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]