Deleting Universal Binary Files

You should know what you are deleting before you delete it. Universal binaries contain both PowerPC and Intel code. As such, those applications will continue to run under Lion. What you may be thinking about is the fact that Lion will no longer contain Rosetta which is what allowed PowerPC applications to run on the Intel machines. Universal binaries are a little different. Rosetta is used to allow applications that are PPC only to run on the Intel machines and universal binaries actually have the code for both platforms built in, so they will still run on the Intel platform without Rosetta:

http://en.wikipedia.org/wiki/Universal_binary

I wouldn't recommend just going through and deleting all universal binaries unless you know exactly what they're for.

I have some spareparts from my first car, 2th and 3th car, 5th and 6th car... from the 70s and 80s and 90s and we can never know - perhaps one day we need it.... I never dit use one single part yet, because the new cars use more smart devices and parts - the old will never fit... but still I keep all this stuff. My new car have to stay outside, there is no space left in my garage or the carport, because all the spareparts.

I have also spareparts from my first 8086 PC, Apple II Apple III Lisa 1 + 2, the Commodore 64, Amiga 2000 and all PC and PPC and Mac sience. The parts will not fit in any of the new iPad Post PC Devices anyway. But never know, perhaps one day.... I have to find soon another house - there is no space for me in my bedroom anymore - more spareparts from the first iMac and the MacBooks I do not use anymore because of the iPad...

So better keep all the Universal Binaries - never know - perhaps one day we need it... ;-)