Per another player's recommendation, I'm re-posting this from another thread:
Just ran into my first empty Data Vault. It was in the Eighteen Billion sector and had four repairable panels on the exterior and one repairable panel inside one of the closed doors, but three doors on the upper side remained closed after taking care of all the repairs. Additionally, neither the ship's nor the spacesuit scanners picked up any data static. I hope there's more than 28 Data Vaults out there or this mission will never complete.
... and a subsequent post from the same thread:
I didn't say this was my first data vault, I said this was my first EMPTY data vault. I've done six data vaults before encountering this one. As an additional note, I went back to this recalcitrant Data Vault a few hours later and I was presented with the other problem noted here on the forums:
All doors closed
All repairable boxes reset to red
Trying to repair any of them fails to do anything
This may be by design to avoid people opening a DV they already looted and complaining about an empty DV. Once looted, the DV gets locked-out.
Can anyone shed some light on this?