Apparently today's situation of many gahmen sites being down wasn't a hack and nobody tripped over the power cable.
From IDA Singapore: "Dear all, Government websites are under planned maintenance. Such planned maintenance is usually undertaken during the weekends and public holidays due to low expected website traffic. The maintenance took longer than expected, due to technical difficulties. Maintenance of the websites is progressively being completed. We apologise for the inconvenience caused."
[Original image from @lupcheong]