Instruct: Classify Amazon reviews into positive or negative sentiment
Query: WRVS4400n LOCKS UP.

We have a small business network and purchased this router primarily for internet access. The router LOCKS UP several times per week and must be powered down/up to get it restored. Even that proceedure can take 2-3 attempts before you get it back up. This major problem makes the router unreliable and completely useless in our application. We spent MANY wasted hours trying to trouble shoot this problem and believe it may simply be a design flaw in the product. We will be relocating it to the dumpster and researching a higher quality product from a different manufacturer.