durand@electrostatic:~$ i bzr
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following packages were automatically installed and are no longer required:
  libwxgtk2.6-0 libwxbase2.6-0
Use 'apt-get autoremove' to remove them.
The following extra packages will be installed:
  python-crypto python-paramiko
Suggested packages:
  python-crypto-dbg
Recommended packages:
  python-pycurl python-celementtree
The following NEW packages will be installed
  bzr python-crypto python-paramiko
0 upgraded, 3 newly installed, 0 to remove and 0 not upgraded.
Need to get 223kB/1704kB of archives.
After unpacking 9007kB of additional disk space will be used.
Do you want to continue [Y/n]? y
Get: 1 http://gb.archive.ubuntu.com feisty/main python-crypto 2.0.1+dfsg1-1.2ubuntu1 [223kB]
Fetched 223kB in 1s (203kB/s)         
Selecting previously deselected package python-crypto.
(Reading database ... 148977 files and directories currently installed.)
Unpacking python-crypto (from .../python-crypto_2.0.1+dfsg1-1.2ubuntu1_i386.deb) ...
Selecting previously deselected package python-paramiko.
Unpacking python-paramiko (from .../python-paramiko_1.6.4-1_all.deb) ...
Selecting previously deselected package bzr.
Unpacking bzr (from .../bzr_0.15-0ubuntu2_all.deb) ...
Setting up python-crypto (2.0.1+dfsg1-1.2ubuntu1) ...
warning: Python C API version mismatch for module time: This Python has API version 1013, module time has version 1012.
warning: Python C API version mismatch for module strop: This Python has API version 1013, module strop has version 1012.
warning: Python C API version mismatch for module _locale: This Python has API version 1013, module _locale has version 1012.
warning: Python C API version mismatch for module struct: This Python has API version 1013, module struct has version 1012.
warning: Python C API version mismatch for module select: This Python has API version 1013, module select has version 1012.
warning: Python C API version mismatch for module fcntl: This Python has API version 1013, module fcntl has version 1012.
Error in sys.excepthook:
Traceback (most recent call last):
  File "/var/lib/python-support/python2.4/apport_python_hook.py", line 30, in apport_excepthook
    import apport.report, apport.fileutils
  File "/var/lib/python-support/python2.4/apport/__init__.py", line 1, in <module>
    from apport.report import Report
  File "/var/lib/python-support/python2.4/apport/report.py", line 14, in <module>
    import subprocess, tempfile, os.path, urllib, re, pwd, grp, os, sys
  File "/usr/lib/python2.4/subprocess.py", line 379, in <module>
    import pickle
  File "/usr/lib/python2.4/pickle.py", line 36, in <module>
    import warnings
  File "/usr/lib/python2.4/warnings.py", line 258, in <module>
    simplefilter("ignore", category=OverflowWarning, append=1)
NameError: name 'OverflowWarning' is not defined

Original exception was:
Traceback (most recent call last):
  File "/usr/bin/pycentral", line 1394, in <module>
    main()
  File "/usr/bin/pycentral", line 1388, in main
    rv = action.run(global_options)
  File "/usr/bin/pycentral", line 878, in run
    pkg = DebPackage('package', self.args[0], oldstyle=False)
  File "/usr/bin/pycentral", line 291, in __init__
    self.read_pyfiles()
  File "/usr/bin/pycentral", line 314, in read_pyfiles
    import subprocess
  File "/usr/lib/python2.4/subprocess.py", line 379, in <module>
    import pickle
  File "/usr/lib/python2.4/pickle.py", line 36, in <module>
    import warnings
  File "/usr/lib/python2.4/warnings.py", line 258, in <module>
    simplefilter("ignore", category=OverflowWarning, append=1)
NameError: name 'OverflowWarning' is not defined
dpkg: error processing python-crypto (--configure):
 subprocess post-installation script returned error exit status 1
dpkg: dependency problems prevent configuration of python-paramiko:
 python-paramiko depends on python-crypto; however:
  Package python-crypto is not configured yet.
dpkg: error processing python-paramiko (--configure):
 dependency problems - leaving unconfigured
dpkg: dependency problems prevent configuration of bzr:
 bzr depends on python-paramiko (>= 1.6.4-1); however:
  Package python-paramiko is not configured yet.
dpkg: error processing bzr (--configure):
 dependency problems - leaving unconfigured
Errors were encountered while processing:
 python-crypto
 python-paramiko
 bzr
E: Sub-process /usr/bin/dpkg returned an error code (1)