Hi All I've been seeing that every so often, the new UMLS web service that we are using for validation, is unavailable. This condition lasts for a short time (minute or two) and then it returns. Initially I thought it was the network at my end, but it was too frequent and seemed more like their service was just rebooting as the service host could be found even during their service downtimes.
I wrote to my technical contact at the NLM and they confirmed that there is indeed a problem. From the wording of their reply, my guess is that they are only now discovering that it is a regular event and also that we are the only ones putting it to a real test. I will write with any updates. Peter