Similar to a previous question ...
In the past the arXiv lookup was very fast.
When I add an arXiv paper, it extracts the arXiv ID correctly, and then I have to run the metadata retrieval from the lookup button.
However, recently the lookup doesn't work, even after multiple tries. Happens for a range of arxiv numbers, e.g. arxiv:1311.3670.
Ideas?
I've got the verbose log but it won't let me post it - too long
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