$ sudo apt-get dist-upgrade
Reading package lists... Done
Building dependency tree... Done
Calculating upgrade... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
7 not fully installed or removed.
Need to get 0B of archives.
After unpacking 0B of additional disk space will be used.
Do you want to continue [Y/n]? y
Setting up python2.4-minimal (2.4.4-3) ...
Linking and byte-compiling packages for runtime python2.4...
Traceback (most recent call last):
  File "/usr/bin/pycentral", line 1373, in ?
    main()
  File "/usr/bin/pycentral", line 1363, in main
    if action.check_args(global_options):
  File "/usr/bin/pycentral", line 971, in check_args
    for rt in get_installed_runtimes():
  File "/usr/bin/pycentral", line 195, in get_installed_runtimes
    default_version = pyversions.default_version(version_only=True)
  File "/usr/share/pycentral-data/pyversions.py", line 126, in default_version
    _default_version = link = os.readlink('/usr/bin/python')
OSError: [Errno 22] Invalid argument: '/usr/bin/python'
dpkg: error processing python2.4-minimal (--configure):
 subprocess post-installation script returned error exit status 1
dpkg: dependency problems prevent configuration of python2.4:
 python2.4 depends on python2.4-minimal (= 2.4.4-3); however:
  Package python2.4-minimal is not configured yet.
dpkg: error processing python2.4 (--configure):
 dependency problems - leaving unconfigured
dpkg: dependency problems prevent configuration of python2.4-dev:
 python2.4-dev depends on python2.4 (= 2.4.4-3); however:
  Package python2.4 is not configured yet.
dpkg: error processing python2.4-dev (--configure):
 dependency problems - leaving unconfigured
dpkg: dependency problems prevent configuration of python-dev:
 python-dev depends on python2.4-dev (>= 2.4.4); however:
  Package python2.4-dev is not configured yet.
dpkg: error processing python-dev (--configure):
 dependency problems - leaving unconfigured
dpkg: dependency problems prevent configuration of python-gtk2-dev:
 python-gtk2-dev depends on python-dev; however:
  Package python-dev is not configured yet.
dpkg: error processing python-gtk2-dev (--configure):
 dependency problems - leaving unconfigured
Setting up python-imaging (1.1.5-11) ...
Traceback (most recent call last):
  File "/usr/bin/pycentral", line 1373, in ?
    main()
  File "/usr/bin/pycentral", line 1367, in main
    rv = action.run(global_options)
  File "/usr/bin/pycentral", line 865, in run
    runtimes = get_installed_runtimes()
  File "/usr/bin/pycentral", line 195, in get_installed_runtimes
    default_version = pyversions.default_version(version_only=True)
  File "/usr/share/pycentral-data/pyversions.py", line 126, in default_version
    _default_version = link = os.readlink('/usr/bin/python')
OSError: [Errno 22] Invalid argument: '/usr/bin/python'
dpkg: error processing python-imaging (--configure):
 subprocess post-installation script returned error exit status 1
dpkg: dependency problems prevent configuration of vim-full:
 vim-full depends on python2.4 (>= 2.3.90); however:
  Package python2.4 is not configured yet.
dpkg: error processing vim-full (--configure):
 dependency problems - leaving unconfigured
Errors were encountered while processing:
 python2.4-minimal
 python2.4
 python2.4-dev
 python-dev
 python-gtk2-dev
 python-imaging
 vim-full
E: Sub-process /usr/bin/dpkg returned an error code (1)