On 15 Feb 2007 10:28:54 -0800, "avocado"
wrote:

You say there were builders on site at the time -
sounds too much of a coincidence to me. Could it be that they shorted
two of the phases sending 415V down on of them?

yes. builders in schools are very good at denying all knowledge of
problems they have caused!
The ones round here are very good at breaking fibre links!

It is a shame that they didnt have a UPS on the main server in the
place. They generally log voltage fluctuations (and protect stuff from
them!).