Steps to reproduce:
1. include the code below in any python file
2. removing the __gstdetails__ variable stops the coredump, but the element will not properly register
3. commenting the last line of this code also stops the core dump


Stack trace:
import pygst
pygst.require('0.10')
import gst
import gobject

class Identity(gst.Element):

  __gstdetails__ = ('Identity Plugin',
                    "identity.py",
                    "Simple Identity Filter Example",
                    "Corey O.")

  _srcpadtemplate = gst.PadTemplate ("srcpadtemplate",
                                     gst.PAD_SRC,
				     gst.PAD_ALWAYS,
				     gst.caps_new_any())

  _sinkpadtemplate = gst.PadTemplate ("sinkpadtemplate",
                                      gst.PAD_SINK,
                                      gst.PAD_ALWAYS,
                                      gst.caps_new_any())



  def __init__(self, name):
    gst.Element.__init__(self)
    self.set_name(name)
    self.srcpad = gst.Pad(self._srcpadtemplate, "src")
    self.sinkpad = gst.Pad(self._sinkpadtemplate, "sink")
    self.add_pad(self.srcpad)
    self.add_pad(self.sinkpad)

    self.sinkpad.set_chain_function(self.chainfunc)
    self.sinkpad.set_event_function(self.eventfunc)

  def chainfunc(self, pad, buffer):
    return self.srcpad.push(buffer)

  def eventfunc(self, pad, event):
    return self.srcpad.push_event(event)

gobject.type_register(Identity)
gst.element_register(Identity, 'identity')

Other information: