Nope Stuart, I've had board settings at GTM+1 since the spring. I did check my board settings on Friday night but they were correct. The times on the posts were showing an hour ahead of what it actually was (so actually GMT+2)
If it had reset itself surely it would have gone to GMT which would have shown an hour behind what it should have been. Must just have been a gremlin as it was showing up fine on Saturday and still is, as far as I can tell
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Don't bother with the dark room Gill - the times really were wrong the other day