Update - Our motherboard was crashing periodically (not necessarily crashing while Adagio was in use and Adagio wasn't necessarily becoming corrupt immediately following a server crash). So, we never put 2 and 2 together, none-the-less, in order to eliminate any and all possible causes for the Adagio data corruption, we changed the motherboard on the server and fully tested the ram etc. Also updated all systems to current drivers and services packs etc. Everything seems to be good now. DataCare is running faster too, even across the server. I'm hoping that the whole issue may have been caused by a flaky motherboard on the server. Time will tell.