Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Works great for a while then LEAKS horrible

Like many others, we're experiencing terrible leaks from the jar when using this blender. We primarily use it to make smoothies with frozen fruit. The blender does an excellent job of making smoothies, but after about 8 months of use, we began to notice that there were drops of smoothie UNDER the bottom of the jar after use. This has steadily grown into a STREAM of smoothie pouring out of the bottom of the jar, all over the blender and onto the counter every time we use it. We've tried to tighten the hex nut that is on the bottom of the jar and it works to stop the leak for maybe one use and then, poof, the leak is back, worse than ever.Avoid this blender at all costs unless you relish the idea of wiping down your blender and counters every time you use it. Terrible design.