
Originally Posted by
latentbinary
1. DOES THIS SEEM LIKE AN HD PROBLEM? if so can it be salvaged?
Yes. Back it up ASAP!

Originally Posted by
latentbinary
2. Could it have been caused by the 5 or so months of running the 1GB upgrade of OCZ ram alongside the original 512MB provided by apple? (both sticks pass on ram tests)
Test it buy taking the RAM out for a little while.

Originally Posted by
latentbinary
3. Is a recent OS upgrade to blame? the problem does seem to co-incide with one of the latest upgrades I have accepted to d/l.
I don't think so. The update just pointed something out that was already going wrong.

Originally Posted by
latentbinary
What are my options?
Back Up ASAP, replace the hard drive. Test without the third party RAM.

Originally Posted by
latentbinary
What other tests should I run to better diagnose the cause of the problem?
Using the original disks that came with your Mac, run the hardware test that is on one of them.
Mac Pro Dual 2.8 Quad (2nd gen), 14G Ram, Two DVD-RW Drives, OS X 10.8.3
2006 Mac Book Pro 2.16 (first Gen) OS X 10.7.4
2TB Time Capsule, 2 TB
32G iPhone 4S Black, iPad (3rd Gen) 32G Black
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