I bought this kettle just over a year ago and all seemed fine. There was no problem with the lid opening that other reviewers have experienced.
The keep warm function was a bit of a gimic, esp since it didn't keep it warm at a temperature you could reusue comfortably. It actually just got annoying when someone used it as you knew you were just wasting energy.
Our issue was the other night, my partner had switched the kettle on to boil, heard a bang and now the kettle will not boil. The light still switches on, so the fuse in the plug must be ok. I can only imagine it's the element or the switch that's broken. :( Not under warranty after a year. :(