How Do You Make OS X Run Strictly Only 64-bit?

Hi. I've set OS X to run on 64-bit on boot (editing the plist. Apple should have a control panel for 32 and 64-bit mode. I hope Lion will have those) but how is it running a 32-bit of Flash on Safari? I thought on this mode it strictly runs only 64-bit programs? So if you're using 32-bit mode, that's really the same as when you're on 64-bit mode coz' on 32-bit mode it'll still use 64-bit apps when it's available (or 64-bit programs won't run when you're on 32-bit mode?).
Is Safari 5 64-bit by the way? There's a preview of the 64-bit Flash player which might be good to try on a 64-bit OS and Safari. Thank you in advance.
Gbu.

Do not confuse user mode application programs with the kernel and device drivers. This is NOT Windows, and does NOT have the limitations that Windows has.
The 32-bit Mac OS X kernel can run both 32 and 64 bit applications. Just launch Applications -> Utilities -> Activity Monitor and the "Kind" column will show you that with the 32-bit kernel you are currently running tons of 64-bit programs.
Today, the only reasons for booting a 64-bit kernel are:
o You are a developer writing a 64-bit device driver
o You need to use a special limited edition 64-bit device driver and have no choice
o You have one of the newest Mac Pros or Xserver boxes and have put more than 32GB of RAM in the box
o You would like to blaze a 64-bit trail testing all the beta 64-bit device drivers so the above mentioned developers get some real world field testing.
Otherwise, the 32-bit kernel gives you all the benefits, and none of the hassles.
Apple released a 64-bit capable operating system that by default boots into a 32-bit kernel so that developers had a nice long period of time to develop and test their 64-bit drivers and applications. I suspect that 10.7 may default boot 64-bit kernels on Macs that are 64-bit kernel capable (ie. they have 64-bit CPUs and have 64-bit firmware), but that is only a guess.
And with respect to a 64-bit kernel running 32-bit apps, yea, Apple can do that too, so again you do not need to get new apps just because you are booting a 64-bit kernel.
Message was edited by: BobHarris

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