On Jun 18, 2007, at 10:32 AM, Andrew Sullivan wrote:

> The situation you describe should be _impossible_.  If it has
> happened, we sure want to know why.  Did you do anything else during
> these issues?  What were the issues anyway?

I had similar happen with a hardware failure -- one of the disks on  
the RAID was reporing bad sectors (now, why wouldn't the idiotic  
Adaptec RAID hardware controller remap them automagically and just  
keep on chugging along?!?!?!?!?!!?!?!?!?1111111).  I ended up with  
duplicate rows of the same PK on some table.

I had to rebuild the whole node from scratch, since I couldn't prove  
the data was identical to the origin, and it changes so fast.