指教，关于错误undefined symbol: PyUnicodeUCS4_FromEncodedObject

[Birkoff]

1：系统ubuntu 9.04
2:装了stackless和lxml

问题，在vim下面编辑调试完全正常，在netbeans下面就不行，提示错误如下,各位有没有解决的办法，请帮帮忙:)

Traceback (most recent call last):
File "/home/ads8/NetBeansProjects/stackless/src/stackless.py", line
9, in <module>
from lxml.html import fromstring, tostring
File "/usr/local/lib/python2.6/dist-packages/lxml-2.2.6-py2.6-linux-
i686.egg/lxml/html/__init__.py", line 12, in <module>
from lxml import etree
ImportError: /usr/local/lib/python2.6/dist-packages/lxml-2.2.6-py2.6-
linux-i686.egg/lxml/etree.so: undefined symbol:
PyUnicodeUCS4_FromEncodedObject