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I thought the hitachi drives are standard now in the SR MBP? Can someone please confirm this :)

I just got my new SR 2.4 yesterday and it has a fujisu 160gb drive in it. The one I messed around with in the apple store on Sunday, had the same fujitsu drive in it as well. I am personally not found of the reliability of Hitachi drives anyway, prefer Seagate for mobile drives myself.
 
My guess is not shutting down does ruin disk permissions over time.

Shutting down, or not, has no impact on disk permissions. My laptop remains on for months at a time, only going to sleep when not active, and it has NEVER had an issue with permissions.

One thing that irks me is it does takes a while to sleep. You can close the lid and count literally seconds before the latch release LED assumes the "breathing" pattern.

Going to sleep should not take much longer than a couple of seconds max, and should actually be closer to about 1 second most of the time.

I recommend that you contact Apple support and see what they say about the problems, you get 90 days of free telephone support.

Sopranino
 
What's the HDD manufacture on your new SR MBP? I had similar experience with one of my previous Napa C2D MBP when it was first launched. It had Fujitsu HDD, then I exchanged with Apple store with another unit that came with Hitachi drive, and running very well since.
HDDs fail sooner or later, it doesn't matter what brand it was, a two person study won't prove anything.
 
Shutting down, or not, has no impact on disk permissions. My laptop remains on for months at a time, only going to sleep when not active, and it has NEVER had an issue with permissions.

Going to sleep should not take much longer than a couple of seconds max, and should actually be closer to about 1 second most of the time.

Regarding the first comment above, I agree completely -- permissions issues can happen (rarely) because the computer crashes, and more often because some program goes and changes a permission. Disk logical errors (the kind you fix with fsck or repair disk in disk utility) happen when the computer crashes most typically.

As for the second comment, many people have commented that putting a Mac that has safesleep to sleep takes 5-10 seconds or so. Using WPA also seems to lengthen wake and sleep times -- it has always taken my iBook G4 about 5 seconds to wake and sleep with the AE card turned on.
 
Strangely enough, I had the same issue with the 120GB drive on my new MBP (I upgraded to 160GB 7200rpm one now). Within a day or two (can't remember which) I couldn't boot up the machine. Luckily I still had my old MBP. I threw the new one into firewire mode (hold down t or whatever) and then mounted the drive on the old MBP and ran the repair disk function. Fixed it right away.

Would have sucked if I hadn't had the old MBP, though.
 
You can always disable the safe sleep and go back to how the old iBooks and PowerBooks went to sleep. There was another thread about this I believe. The link on how to do it is here.

As with messing up Disk Permissions, I have found that force shutting down your Mac computer is a bad idea and can really screw things up. Happened to me a couple times.
 
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