Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Works great, but update that firmware!!!

I've had this router for a little while now, and have had no problems. Setup was easy, I get pretty good range in an old brick house, and I like all of the new security features available with it...On that note, make SURE you go to the linksys website and download the new firmware. There is a serious security issue with the version that is shipped (version 4.50.6) which allows wireless clients that are not using any encryption to access the wireless network even when WPA Personal/TKIP wireless security setting has been enabled. They fixed the issue with firmware version 4.70.6.(see the documentation that comes with the router for more info on how to update the firmware)