Update tool crashes to Kubuntu 7.10

[mwanstall]

Binary package hint: update-manager

After running a Dist Upgrade the Cleanup step runs to try to delete all my redundant packages and the following error occurred:

Traceback (most recent call last):
  File "/tmp/kde-mwanstall/adept_managerk1DdIa.tmp-extract/dist-upgrade.py", line 59, in <module>
    app.run()
  File "/tmp/kde-mwanstall/adept_managerk1DdIa.tmp-extract/DistUpgradeControler.py", line 1346, in run
    self.fullUpgrade()
  File "/tmp/kde-mwanstall/adept_managerk1DdIa.tmp-extract/DistUpgradeControler.py", line 1335, in fullUpgrade
    self.doPostUpgrade()
  File "/tmp/kde-mwanstall/adept_managerk1DdIa.tmp-extract/DistUpgradeControler.py", line 945, in doPostUpgrade
    res = self.cache.commit(fprogress,iprogress)
  File "/tmp/kde-mwanstall/adept_managerk1DdIa.tmp-extract/DistUpgradeCache.py", line 69, in commit
    apt.Cache.commit(self, fprogress, iprogress)
  File "/usr/lib/python2.5/site-packages/apt/cache.py", line 215, in commit
    res = self.installArchives(pm, installProgress)
  File "/usr/lib/python2.5/site-packages/apt/cache.py", line 190, in installArchives
    res = installProgress.run(pm)
  File "/usr/lib/python2.5/site-packages/apt/progress.py", line 213, in run
    pid = self.fork()
  File "/tmp/kde-mwanstall/adept_managerk1DdIa.tmp-extract/DistUpgradeViewKDE.py", line 244, in fork
    self.child_pid = os.fork()
OSError: [Errno 12] Cannot allocate memory