python2.7 crashed with SIGABRT in __assert_fail_base()

[AmasterZero]

alfredo@alfredo-AOA150:~$ netbeans

** WARNING **: Couldn't connect to accessibility bus: Failed to connect to socket /tmp/dbus-71Ub8tY812: Connection refused
The program 'java' received an X Window System error.
This probably reflects a bug in the program.
The error was 'BadValue (integer parameter out of range for operation)'.
  (Details: serial 115 error_code 2 request_code 147 minor_code 2)
  (Note to programmers: normally, X errors are reported asynchronously;
   that is, you will receive the error a while after causing it.
   To debug your program, run it with the --sync command line
   option to change this behavior. You can then get a meaningful
   backtrace from your debugger if you break on the gdk_x_error() function.)

alfredo@alfredo-AOA150:~$ netbeans --sync

** WARNING **: Couldn't connect to accessibility bus: Failed to connect to socket /tmp/dbus-71Ub8tY812: Connection refused
The program 'java' received an X Window System error.
This probably reflects a bug in the program.
The error was 'BadValue (integer parameter out of range for operation)'.
  (Details: serial 115 error_code 2 request_code 147 minor_code 2)
  (Note to programmers: normally, X errors are reported asynchronously;
   that is, you will receive the error a while after causing it.
   To debug your program, run it with the --sync command line
   option to change this behavior. You can then get a meaningful
   backtrace from your debugger if you break on the gdk_x_error() function.)

ProblemType: Crash
DistroRelease: Ubuntu 12.04
Package: python2.7-minimal 2.7.2-13ubuntu5
ProcVersionSignature: Ubuntu 3.2.0-17.26-generic 3.2.6
Uname: Linux 3.2.0-17-generic i686
ApportVersion: 1.93-0ubuntu2
Architecture: i386
Date: Fri Feb 24 07:35:54 2012
ExecutablePath: /usr/bin/python2.7
InstallationMedia: Ubuntu-Netbook 10.10 "Maverick Meerkat" - Release i386 (20101007)
ProcCmdline: python transmageddon.py
Signal: 6
SourcePackage: python2.7
StacktraceTop:
 raise () from /lib/i386-linux-gnu/libc.so.6
 abort () from /lib/i386-linux-gnu/libc.so.6
 ?? () from /lib/i386-linux-gnu/libc.so.6
 __assert_fail () from /lib/i386-linux-gnu/libc.so.6
 av_rescale_rnd () from /usr/lib/i386-linux-gnu/i686/cmov/libavutil.so.51
Title: python2.7 crashed with SIGABRT in raise()
UpgradeStatus: Upgraded to precise on 2012-02-21 (2 days ago)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare vboxusers

[Apport retracing service (apport)]

StacktraceTop:
 __assert_fail_base (fmt=0xb729c76d <Address 0xb729c76d out of bounds>, assertion=0x8ff91ea "c > 0", file=0x8ff91a4 "/build/buildd/libav-extra-0.8.0.1build1/libav/libavutil/mathematics.c", line=79, function=0x8ff9520 "av_rescale_rnd") at assert.c:94
 __GI___assert_fail (assertion=0x8ff91ea "c > 0", file=0x8ff91a4 "/build/buildd/libav-extra-0.8.0.1build1/libav/libavutil/mathematics.c", line=79, function=0x8ff9520 "av_rescale_rnd") at assert.c:103
 ?? ()
 gst_ffmpegenc_encode_audio (ffmpegenc=0x0, audio_in=0xb6f91c78 "", max_size=16384, timestamp=0, duration=23219954, discont=1, in_size=<optimized out>) at gstffmpegenc.c:867
 gst_ffmpegenc_chain_audio (pad=0xb212c8d0, inbuf=0x9d8b4d8) at gstffmpegenc.c:1012