Blog posting job - always times out

My weekly posts job used to work but no longer does. When I test it on ma.gnolia, I get a "time limit exceeded" error come back.

It's like the job can't talk to the XML-RPC file, which doesn't make sense, as I have other tools successfully posting to my blog using the same technique. I've also rechecked the file permissions and they're set to 755, which should be enough.
 
sad I’m frustrated
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