I installed 64bit Linux for the first time, so my question can be quite silly.
After some struggle with nvidia installer and 32bit apps, and 32bit apps in general I noticed one thing. Same packages, but for different arch can actually contain identical files in identical locations.
rpm -qa SDL_net-devel
rpm -ql SDL_net-devel-1.2.7-4.fc9.x86_64
rpm -ql SDL_net-devel-1.2.7-4.fc9.i386
In this case SDL_net.h is the same in both cases. But there are many other examples of this.
Also, I noticed, that if I e.g. uninstall x86_64 arch package and leave the i386 one and then do rpm -ql name.i386.rpm, it shows files which are not available on the system anymore, because they were removed with the x86_64 rpm.
It's likely normal behaviour and I'm probably overlooking something obvious, but it's bugging me.
Thx in advance for enlightening.