Well its not the end of the world, but its certainly very curious.

You can't install kde because of lack of kdewebdev. You can't install this because of lack of quanta. You can't install quanta because of lack of libkde4. And you can't install this because its been replaced by another package.

iwill:~# apt-get install kde Reading package lists... Done Building dependency tree... Done Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming.

Since you only requested a single operation it is extremely likely that the package is simply not installable and a bug report against that package should be filed. The following information may help to resolve the situation:

The following packages have unmet dependencies. kde: Depends: kdewebdev (>= 4:3.4.3) but it is not going to be installed E: Broken packages iwill:~# apt-get install kdewebdev Reading package lists... Done Building dependency tree... Done Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming.

Since you only requested a single operation it is extremely likely that the package is simply not installable and a bug report against that package should be filed. The following information may help to resolve the situation:

The following packages have unmet dependencies. kdewebdev: Depends: quanta (>= 4:3.4.3-2) but it is not installable Depends: kfilereplace (>= 4:3.4.3-2) but it is not installable Depends: kimagemapeditor (>= 4:3.4.3-2) but it is not installable Depends: klinkstatus (>= 4:3.4.3-2) but it is not installable Depends: kommander (>= 4:3.4.3-2) but it is not installable Depends: kxsldbg (>= 4:3.4.3-2) but it is not installable E: Broken packages iwill:~# apt-get install quanta Reading package lists... Done Building dependency tree... Done Package quanta is not available, but is referred to by another package. This may mean that the package is missing, has been obsoleted, or is only available from another source However the following packages replace it: quanta-data kdewebdev-doc-html E: Package quanta has no installation candidate iwill:~# apt-get install kdewebdev quanta-data kdewebev-doc-html Reading package lists... Done Building dependency tree... Done quanta-data is already the newest version. E: Couldn't find package kdewebev-doc-html iwill:~#