Meanwhile, as if to prove that humans really can exist in more than one place at the same time, our Facebook profiles continue to carry on our online lives for us even when we're not logged on.

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The East of England Ambulance Service (EEAS) said incidents of police taking patients to hospital because of late or unavailable ambulances are not logged - though references were made on call logs if a call-out is cancelled.

BBC: News

Although Napster states that it is not possible to keep the same account logged in on two machines simultaneously, MusicAlly, a music industry analysis firm, found that in practice quite the reverse was true.

ENGADGET: Napster users sharing accounts: common practice?

She said many were handwritten as they were not on computer lists and therefore may not have been logged.

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According to statements made by Bloomberg to the Times, the reporters were not able to see trading activity, but merely got side views into who logged on when and usage statistics.

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The explanation - that Raissi made a mistake in filling his log book, that he had flown in the Piper not on March 8th, but March 9th, a date which tallies with flying hours that were also logged.

BBC: Lotfi Raissi transcript