Why do dpkg and aptitude want to remove MOST of my system?

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http://askubuntu.com – I was installing and uninstalling some packages on my home 11.10 system, when I suddenly noticed that dpkg and aptitude want to remove almost everything. Synaptic seems fine. At work, where I have an almost identical setup, I am NOT having this problem. From here, I thought it was a multiarch problem, but, again, the same setup at work is fine. The only thing besides current updates that I've applied was a qdbus package, which I notice now was i386. I installed the "normal" version, which automatically uninstalled the 32-bit version, but my system is still insane. I can't get aptitude to m (HowTos)