Instruct: Classify Amazon reviews into positive or negative sentiment
Query: It was great when it worked... only 3 months

I was really happy with the performance of my 4 GB unit, with or without the u3, you can get used to it and actually find a use, it's a good idea that needs just a few tweaks.The problem here is that it workded only for 3 months of average use. I reported the problem to sandisk and they gave me a terrific service and in less than 48 hours I already had my shipping label to send them back the unit and get an additional one.I would wait a little longer if this is your first time just to make sure they have fixed all the bugs.