Howdy. Thought I'd chime in with my experience with this issue....
I have a 24" iMac 2.4 2GB. Everything was great with 10.4.10...
When 1.1 came out I updated. Started getting freezing every 10 mins or so.
So, I rolled back to 1.0. No worries. Everything was good again.
Then, Leopard comes out, so I upgrade. All of a sudden, my freezing is back again..
So, I call AppleCare. They tell me they are aware of the issue, that 5% or so of all iMacs are having this problem (paraphrasing here). To get that answer involved nearly 2 hours on the phone (1:50 of which was on hold). Considering Apple's recent financials, you'd think they could hire a few extra techs for a month or two after the roll-out of Leopard.
They told me to take it to my Apple store with a case #, and they'd likely replace it. So, I wiped the drive and packed it up.
Went to the Apple store, gave them case number. The 'Lead Genius' seemed astounded. Never heard of it before! Can't do a replace! Must be a software issue!
I couldn't duplicate it because I had wiped the drive and put 10.4 back on. D'oh!
So, they test it out with Leopard. They 'claim' they test for 5 hours under load and no crash or freeze.
So, I pick it up and take it home. Reinstall my apps (4 hours later...). Starts freezing again randomly...
I STORM back to the Apple store with 10.5 still installed... I demo the freezing for the Genius (not a tech, just a desk genius). He confirms the freeze.
3 hours later I get a call from a tech who tells me that he's had it under load for 5 hours (no kidding! 3 hours after I drop it off. Silence on the phone when I explain that anomaly to him...)... Says it's crashed once in five hours...
So, I tell him to open the screen-saver prefs for arabesque and leave it running. Then open iTunes visualizer, then scroll quickly back and forth over the dock.
...it freezes in 20 seconds.
They're ordering parts to fix it now. I'm pissed, but internalizing it. What else is there to do?
I'll post again when I get it back.
-Ben
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