Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Beware ours lasted 8 months before packing up!

Initially we were very pleased with this coffee maker. Easy to use, looks good etc. After 7 months we started to have intermittent problems with the water pump. It would suddenly seem unable to send water through the k cups and out into the cup. Sometimes it worked and other times it didn't. Eventually it seemed to stop all together. I cleaned it thoroughly and descaled the machine but still it would not work. We thought that was it and that we had been landed with a dud unit. I did a bit of research and found that this issue crops up again and again in customer reviews. We were very disappointed especially when we could not locate our receipt! (we did not purchase this unit from Amazon). I left the unit a couple of days them decided to try it one more time before I threw it out and hey presto it worked! Wait for it, for another 4 weeks and then again stopped again :-( I think this is a case of buyer beware and keep hold of that receipt!