This issue has been continuing for a few weeks now. Here are my computer's specs: Snow Lepoard 10.6.1 Model Name: Mac Pro Model Identifier: MacPro4,1 Processor Name: Quad-Core Intel Xeon Processor Speed: 2.26 GHz Number Of Processors: 2 Total Number Of Cores: 8 L2 Cache (per core): 256 KB L3 Cache (per processor): 8 MB Memory: 8 GB Chipset Model: ATI Radeon HD 4870 Type: GPU Bus: PCIe Slot: Slot-1 PCIe Lane Width: x16 VRAM (Total): 512 MB Vendor: ATI (0x1002) A co-worker of mine has the same setup and has the same issue. The open programs at the time of the issue are similar as well. While working I have had open at one time Firefox, a few finder windows, Adobe Lightroom and a calender/client management program that is 4D based. Or something similar, nothing too taxing on a system. The issue is while I am working out of nowhere and without warning the screen turns blue and I am logged out. I have to type in my password and log back in to find all my programs have quit and my finder windows closed and any transfers being done canceled. I heard it could be a Rosetta issue but none of my programs are running in Rosetta. My computer doesn't crash in a critical way, no manual powering off required, just logs me out for some reason. Does anyone have any idea why this would be happening and how to fix it? It is very annoying and is beginning to happen more and more frequently.