since 12.10, cron jobs no longer work

Thank you for taking the time to report this bug and helping to make Ubuntu better. It seems that your bug report is not filed about a specific source package though, rather it is just filed against Ubuntu in general. It is important that bug reports be filed about source packages so that people interested in the package can find the bugs about it. You can find some hints about determining what package your bug might be about at https://wiki.ubuntu.com/Bugs/FindRightPackage. You might also ask for help in the #ubuntu-bugs irc channel on Freenode.

To change the source package that this bug is filed about visit https://bugs.launchpad.net/ubuntu/+bug/1071983/+editstatus and add the package name in the text box next to the word Package.

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Thank you for taking the time to report this bug and helping to make Ubuntu better. Please execute the following command, as it will automatically gather debugging information, in a terminal:

  apport-collect 1071983

When reporting bugs in the future please use apport by using 'ubuntu-bug' and the name of the package affected. You can learn more about this functionality at https://wiki.ubuntu.com/ReportingBugs.

The app collector ran, but it may not have uploaded properly according to the terminal output:
kded(5800) ColorD::addOutput: Failed to register device: "device id 'xrandr-HZ281H-147LM3AY0143' already exists"
>>> 0x15ad980 created Job Job
>>> 0x166b730 created JobFactory
>>> 0x1669040 created JobFactory
>>> 0x1661e70 created Job Job
>>> 0x146a9f0 created Job Job
>>> 0x1669040 deleted JobFactory
>>> 0x166b730 deleted JobFactory
>>> 0x15ad980 deleted Job Job
>>> 0x1661e70 deleted Job Job
>>> 0x146a9f0 deleted Job Job
klauncher: Exiting on signal 15
klauncher(5833)/kio (KLauncher) KLauncher::slotKDEInitData: Exiting on read_socket errno: 11
dpkg-query: no packages found matching ubuntu-release-upgrader
Traceback (most recent call last):
  File "/usr/share/apport/apport-kde", line 519, in <module>
    UserInterface.run_argv()
  File "/usr/lib/python2.7/dist-packages/apport/ui.py", line 634, in run_argv
    return self.run_update_report()
  File "/usr/lib/python2.7/dist-packages/apport/ui.py", line 554, in run_update_report
    attachment_comment='apport information')
  File "/usr/lib/python2.7/dist-packages/apport/crashdb_impl/launchpad.py", line 358, in update
    report.write_mime(mime, skip_keys=skip_keys)
  File "/usr/lib/python2.7/dist-packages/problem_report.py", line 504, in write_mime
    attach_value = CompressedValue(v, k).gzipvalue
  File "/usr/lib/python2.7/dist-packages/problem_report.py", line 44, in __init__
    self.set_value(value)
  File "/usr/lib/python2.7/dist-packages/problem_report.py", line 50, in set_value
    gzip.GzipFile(self.name, mode='wb', fileobj=out).write(value)
  File "/usr/lib/python2.7/gzip.py", line 230, in write
    self.crc = zlib.crc32(data, self.crc) & 0xffffffffL
UnicodeEncodeError: 'ascii' codec can't encode characters in position 391224-391257: ordinal not in range(128)

Status changed to 'Confirmed' because the bug affects multiple users.

This is unlikely related to the distribution upgrade process rather with the facility for process cronjobs.