Uninstall Chromium, forces install of Firefox??

I have copied the below text from a comment I made on another package. It was unrelated, but I made the comment at the time because I was unsure what package to report this to. As it was happening in the Terminal when apt-get removing, in Lubuntu Software Center, and in Synaptic. So I think it is actually a problem with a underlying thing that is common to all of them. Please move to the proper package.

Thank You and God Bless.

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  I had a strange issue in package management. I wanted to uninstall Chromium from Lubuntu (cause I prefer Midori, much lighter, faster, and has all the needed extensions included by default) But when I did remove Chromium, Firefox was automatically installed. I have no idea why. So I uninstalled Firefox, and then Epiphany was install (also called "Web"), I uninstalled Epiphany, then for some reason, Rhythmbox was installed. And it continued to get more strange from there. The only way I was able to solve this, was use Synaptic, and each time a package was marked to be installed because I was removing another, I "unmarked".

   It took about 10 or 15 minutes, but finally got all the strange packages removed. But it was very frustrating to have to go through all that just cause I wanted to remove Chromium. >:-( This is the only installation that I've ever had this problem with.