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If the sluggishness isn't due to a software/hardware issue or a shortage of RAM, then SSDs are the way to go. The snappier feel they give is incredible.
 
I'd suggest you try the following as it's proved very beneficial for me:

1) Use Xslimmer, as it reduces the program to only its Intel binaries. Since Leopard has to see which one's to use, having only the Intel ones not only removes the hassle but also saves a ton of space.

2) Some may have different opinions about this, but iDefrag proved quite useful. Burning a boot DVD with CDMaker and defragging the hard drive, I noticed shorter times in bootup, shut down and even loading of apps.

Permission repairs also play a role but the above are supplements as well.

Hope this helps!
 
My UniBody 17" runs just okay!

It takes about 25-30 secs to boot.
Sometimes it takes a few more secs, it depends.

But as already stated above, just put it in sleep mode.
 
When you leave it running, OS X caches closed programs in any extra RAM you are not using, so next time you go to open them, they start a lot faster. Restarting clears all that out.

I just wish the Mac would be like Vista where it has SuperFetch technology to remember the apps you open most frequent and actually cache the programs onto the RAM from a fresh reboot.

dL
 
I just wish the Mac would be like Vista where it has SuperFetch technology to remember the apps you open most frequent and actually cache the programs onto the RAM from a fresh reboot.

dL

Then people would complain about all the disk thrashing, like they do with Vista. You could probably write some kind of script that loads your favorite apps in the background then quits them, and run it after startup.

I tried, unsuccessfully, to create a RAM disk in OS X (it is theoretically possible, though maybe not in Leopard. Google it) that I could copy stuff into on startup and load stuff from. Since I have 6gb of RAM, it would be nice to use all of it more often.
 
I'd suggest you try the following as it's proved very beneficial for me:

1) Use Xslimmer, as it reduces the program to only its Intel binaries. Since Leopard has to see which one's to use, having only the Intel ones not only removes the hassle but also saves a ton of space.

2) Some may have different opinions about this, but iDefrag proved quite useful. Burning a boot DVD with CDMaker and defragging the hard drive, I noticed shorter times in bootup, shut down and even loading of apps.

Permission repairs also play a role but the above are supplements as well.

Hope this helps!

You have to be careful with Xslimmer though...sometimes it can break some applications like Microsoft Office and the Adobe Suite...
 
XSlimmer doesn't do crap to boot up times. A few GBs more disk space won't speed up boot times. It does however, free up disk space.

By theory, defragging will help since it's easier to seek files when they are clumped up next to each other than spread across the disk.

Honestly, Leopard boots under 30 seconds for me. Even if I reduced that to say, 0 seconds (impossible unless I'm in sleep mode), 30 seconds won't kill you...
 
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