Comment 4 for bug 923068

Hmm actually it's more complicated than that. libvisual is a proper multiarch package, but libvisual-plugins is not. So the package manager here removes your amd64 libvisual-plugins and installs the i386 libvisual-plugins to match your i386 libvisual. I'll have to investigate libvisual itself to see whether the plugins are architecture-specific (in which case they should be multi-arched and made coinstallable like libvisual itself), or whether they're architecture-independent (in which case libvisual-plugins should be arch:all)