Using the 0.4.2 Ubuntu PPA the following example doesn't run (works fine with
PyQt):

import sys
from PySide import QtCore
from PySide import QtGui
from PySide import QtWebKit

app = QtGui.QApplication(sys.argv)
web = QtWebKit.QWebView()
web.load(QtCore.QUrl("http://google.com"))
web.show()
web.page().mainFrame().evaluateJavaScript("alert('test')")
sys.exit(app.exec_())


Error message:

Traceback (most recent call last):
  File "script.py", line 10, in <module>
    web.page().mainFrame().evaluateJavaScript("alert('test')")
RuntimeError: Internal C++ object already deleted.