Several sudden shutdowns on new iMac

My new iMac had several sudden shutdowns in the last 30 minutes.
Just normal use, open were mail, safari temp. monitor.
Here is a picture of the log just before crashing.
http://i767.photobucket.com/albums/xx320/mariner4/Schermafbeelding2010-08-29om17 1649.png

Hope someone can make out something.

peterwillem

macbook pro 4,1; iMac 27" i7, Mac OS X (10.6.4)

Posted on Aug 29, 2010 9:36 AM

Jan 22, 2014 1:14 PM in response to peterwillem

Memory & Freeze Problem: 27" iMac, Mid 2011, 2.7 GHz i5

I had this machine for years without a problem at stock 4GB Ram.

Upgraded a few weeks back to 12GB by adding two Corsair 4GB modules from Amazon. CMSA8GC3M2A1333C9. I had no problems.

I decided to go to 16GB by removing the original 2, 2GB modules and replacing them with 2 additional 4GB ones. They are the same as the first new set of modules.

The machine would freeze (No mouse or keyboard response) and randomly restart. I happened multiple times per day. The machine was unusable.

I ran AHT and everything passed. I ran that test twice along with one other memory test.

I returned the memory to Amazon who quickly sent me two new modules. I put them in and immediatly I have the same problem.

The memory spec is exactly what Apple recommends. There are even Mac logos all over the package.

I have read about problems upgrading this machine to 16GB. That is crap. There must be a fix if apple says the machine supports 16GB.

In the intrim I will return the latest two modules to Amazon.