Feel the earth move

Today I had a day off. And for my day off I did some shopping in the morning and then went to RMC in the afternoon to help out with a server problem that they had been having. I fixed the problem easily- they had not switched it on after a power failure a number of weeks ago. Always try the "on" button first, people!
Then I was working with them on some other issues and the desk starts shaking like crazy and the floor is vibrating. And Philip says "It's the rats, they've gotten very big since you left". We decided that it probably had something to do with the construction nearby and didn't realize it was an earthquake until Geoff saw it online.