apt-get "the following packages have been kept back"

[Seth R Arnold <sarnold@willamette.edu>]

Hello there.

Can someone explain to me what this message means? :)

amidala:/var# apt-get upgrade
Reading Package Lists... Done
Building Dependency Tree... Done
The following packages have been kept back
  gimp1.1 login python-base python-tk shellutils wmaker
0 packages upgraded, 0 newly installed, 0 to remove and 6 not upgraded.


Why aren't those being upgraded? Is one of the newer versions' dependancies
updated that conflicts with some other dependancy somewhere else on the
system?

Thanks :)

-- 
Seth Arnold | http://www.willamette.edu/~sarnold/
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