I bought it in July 2014 - it's never been particularly good though.
The chaps in the shop agreed that it isn't working properly, in fact one of them said it was "possessed"! So it's gone back for another repair attempt...
Due back in a week's time; if it's still slow I'll be asking to replace it with something else as it's under extended warranty until July 2019. I had a play with a couple of similarly-spec'd laptops in the store today and they were lightning fast in comparison!