Some vids on YouTube:
Apple MacBook Pro (late 2009) Freezing Issue PART 1
Apple MacBook Pro (late 2009) Freezing Issue PART 2
Despite the "2009" in those examples, that is the exact freeze (20 — 30 seconds) which many users are having.
Those are my videos.
Just to clarify a couple things I showed on there, transferring a large file is not necessary to cause the freeze, but it simply an easy way to cause it. The freeze has happened to me numerous times while not touching the MBP with no applications running.
Also, there seems to be a consensus of the owners with problem 2010 models relating it to the video card switch. I cannot vouch for that, but it may be the case. On the 2009 models, the issue has 100% been pinpointed to the EFI 1.7 firmware update. If the firmware is actually the issue on the 2010 models, then simply downgrading to the previous firmware is not an option since no firmware updates have been released for that model yet. If it turns out to be the video switch between the two video chips, then it is a different issue than what I demonstrated in the videos. The reason for that is my system only has the 9400 Nvidia chip.
So far, I have not been able to get Apple to fix my system. My attempts have resulted in some of the worst customer service experiences of my lifetime though. All bad experiences took place in an Apple Store. All good experiences took place on the phone with Apple.
This freeze is not the same as mine.
While I initially thought that it was related to HD activity (the first freeze happened the day I got the MacBook Pro, while I was copying files from my old machine to the new one, then the second and third freezes happened while I was running a virtual machine in Parallels) I've had it happen since then simply browsing on Firefox and using Adium.
When the freeze happens to me, the only thing that is responsive is the mouse cursor. I can move it around, but nothing else happens-- I have iStat, which shows various graphs related to CPU/disk activity/network activity, and these all freeze in place. A literal freeze, like the computer has crashed. The Dock doesn't show or hide, none of the icons react by mousing over, there isn't even a beachball, just a normal mouse cursor. The computer itself seemingly continues to run, because file transfers continue while the screen is locked up and I'm not disconnected from Adium, but for exactly (exactly, I've timed it every time save the first freeze) ten minutes, the graphics lock up and the computer is unresponsive. After ten minutes everything clicks back to normal as if nothing went wrong.
I also haven't been able to reproduce the issue on command ever, whether copying large files back and forth or anything else. It happens at random as far as I can tell, but there's no crash files or console reports to narrow the problem down.
That said, about a week or so ago I reinstalled OS X because I wanted to add a Boot Camp partition, and I haven't had a lock up since then. I'm thinking it's probably dumb luck rather than any fix, but so far the system has been fine.
Has anyone had this lockup on MacBook Pros in Windows? If it's a hardware issue, I would expect that sort of glitch to happen in Windows as well. If it's simply a driver issue in OS X then it might not.