Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Fine, until...

We got this as a christmas gift and have been using it fairly frequently ever since. It has performed well.But, I just got finished cleaning up glass from all over my kitchen this morning after the top spontaneously exploded. In spite of being tempered, the glass top left a lot of small shards along with the usual square harmless bits. It's quite a mess.Very disappointing, to say the least.