Strange ECC Memory Errors

[garyf64]

I have been getting ECC errors on my Mac Pro 1.1, but only in one memory slot. I have tried replacing memory and switching memory around and still get errors just in that one slot. (Riser A/Dimm 2, 4-errors). Computer runs fine otherwise. Could this be a problem with the memory card, or indicate another potential problem? I depend on my machine running flawlessly. Thanks for any ideas.

Mac Pro 1.1 / 12GB Ram / OS 10.6.8

 

[Mr. Retrofire]

The problem is probably dust and/or heat.

 

[linuxcooldude]

Since your getting errors in just that one slot, its a bad memory slot?