zlib module broken in python 2.5

> ImportError: ./zlib.so: symbol inflateCopy

closing as invalid, you're importing a local zlib version.

I'm having the same issues with the zlib from repositories on feisty. I tried reinstalling the zlib package and also python-minimal (where zlib.so is located)
Python 2.4 imports zlib just fine.

Python 2.5.1 (r251:54863, May 2 2007, 16:56:35)
[GCC 4.1.2 (Ubuntu 4.1.2-0ubuntu4)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import zlib
Error in sys.excepthook:
Traceback (most recent call last):
  File "/var/lib/python-support/python2.5/apport_python_hook.py", line 30, in apport_excepthook
    import apport.report, apport.fileutils
  File "/var/lib/python-support/python2.5/apport/__init__.py", line 1, in <module>
    from apport.report import Report
  File "/var/lib/python-support/python2.5/apport/report.py", line 20, in <module>
    from problem_report import ProblemReport
  File "/var/lib/python-support/python2.5/problem_report.py", line 15, in <module>
    import bz2, zlib, base64, time, UserDict, sys, gzip
ImportError: /usr/lib/python2.5/lib-dynload/zlib.so: undefined symbol: inflateCopy

Original exception was:
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ImportError: /usr/lib/python2.5/lib-dynload/zlib.so: undefined symbol: inflateCopy
>>>

> ImportError: /usr/lib/python2.5/lib-dynload/zlib.so: undefined symbol: inflateCopy

ldd /usr/lib/python2.5/lib-dynload/zlib.so ?

Oh, man, I'm so sorry... got to know my environment better. The mono bin package I installed messed up with my .bashrc exporting some evil lib paths:

kao@kao-laptop:~$ ldd /usr/lib/python2.5/lib-dynload/zlib.so
        linux-gate.so.1 => (0xffffe000)
        libz.so.1 => /home/kao/mono-1.2.3.1/lib/libz.so.1 (0xb7f28000)
        libpthread.so.0 => /lib/tls/i686/cmov/libpthread.so.0 (0xb7ef4000)
        libc.so.6 => /lib/tls/i686/cmov/libc.so.6 (0xb7db2000)
        /lib/ld-linux.so.2 (0x80000000)

Well, I'm closing it again. At least I've learned something. I didn't know about ldd and I was searching for something exact like that to solve this problem. Thanks and sorry again for wasting your time...