Here is a review left by a customer on a product. Would you say he was satisfied or dissatisfied?
Title: Buttons stop working after few months!!!
Review: This mouse feels and works great. However, the buttons break very easily. My right button stopped working within 3months, I called Microsoft and they sent me a new one. After 2months, that right button stopped working again. The buttons still work, but they only work once in a while. For ex, to get the right button to work, I have to click on it at least 3-4 times. I now have 2 broken mice. Do a search on Google for MS Intellimouse explorer 4.0 and you will find other customers complaining about the same problem. STAY AWAY FROM THIS MOUSE!
