Update on MBP issue
Status update... Sorry for the long post.
My problems were using a Corsair P256 SSD, but the MBP shipped with an Hitachi 5400rpm drive. Genius Bar said the stress tests revealed nothing wrong with the machine and that the issue was attributed to the Corsair SSD. They said nothing further can be done unless the problems can be recreated on the shipped drive. Fair enough.
Not ready to abandon the SSD yet, I decided to do a fresh re-install (using the Apple provided disks) to observe all aspects of the machine's behavior. Here is what I discovered:
1. Installation was punctuated by long idle periods where it appeared nothing at all was happening. Perhaps this is a feature of normal Snow Leopard installs, but I thought it was strange. When installation kicked off the estimated time was listed at 35 minutes, but it sat idle for well over 20+ minutes. Does anyone know if there are checksums or other CPU/memory processes going on before files are copied?
2. Following installation but prior to any apps being installed, I looked in Console to view errors. There were a whole bunch. Some messages about 'throttling io' and quite a few more about 'set a breakpoint at CGErrorBreakpoint...' There were a bunch from mdworker and some more about 'could not find com.apple.ReportCrash.Self'. After running Software Update and rebooting, these errors continued at the same rate as before. (Safari Webkit plugin kept calling Debugger() like mad, but I understand this is a benign issue and is related to Flash?)
3. I next decided to evaluate 'Verify Disk' and 'Repair Permissions'. Repair Permissions found about 20-50 files that were wrong. It repaired all but 3 of them. I then rebooted and immediately ran both programs again. Repair Permissions again found some 10-20 files with wrong permissions. It was able to repair all but the same 3 again. Same pattern after subsequent reboots.
4. The machine felt snappy, but due to the sheer number of error logs, I figured the SSD was in fact defective. I shipped it back.
Now it was time to reinstall on the Hitachi (Apple provided) drive. Installation exhibited the same type of stalls as before. Installation took 75-80 minutes instead of the estimated 45 minutes. It sat idle for over 35min at the beginning. After installation console errors seemed to mostly go away, however. I have been using the Hitachi drive for 2 days and just experienced my first freeze -- when plugging in an external monitor after coming out of sleep. The machine locked up with a PURE BLUE SCREEN. It was completely unresponsive, requiring a hard reset. I'll continue to report back about my experiences using the shipped Hitachi drive, but quite obviously, it appears the issue isn't resolved.
Summary: error logs hint at a SATA controller problem. But plugging in an external display has now twice crashed the machine, which seems to hint at a graphics problem.
To other users: have you particularly noticed:
a) more error entries than normal in your console log?
b) file permission errors accumulate faster than normal?
c) beach balls when switching between apps once in a long while?
d) crashes sometimes happen when plugging in external monitor after coming out of sleep mode?
Hey! Another user here with exactly the same experience!
My MBP i5 2.4GHz has frozen 5-6 times during the initial 2 weeks. Today after taking it to Genius Bar, they couldn't boot it on their drive using Firewire OR usb. They even removed the regular hard drive but got the same results.
I'm leaning toward logic board problem.