Comment 2 for bug 903948

I did the following two tests:

1- I had the system pull the Ubuntu ISO image and verify its md5 checksum several times, to test for network corruption. It passed every time. The problem here is that TCP pretty much guarantees that data will be consistent, if the link has errors or corruption TCP will retry until it gets things right. So this test may not be conclusive; next step would be to test using UDP, which I still need to research a bit.

2- The system has been running memory test for ~20 hours without a single failure, so I think memory failure can be ruled out.

So far it's looking like network corruption but as mentioned before, I'll still need to do some more testing before reaching a conclusion.