This one is a year old or so. Got it from Spencer's. It's the Northern Lights Lava Lamp - 17 Inch Clear Liquid White Wax. I've run it about 30 times or so. I just noticed today that there's a section of wax stuck to the side of the globe about 3/4" inch up from the bottom. Pretty much every lamp I've gotten from Lava Lite from the last five years has this problem and it's the main reason I don't buy their new stuff anymore. All four of my Neons had this problem, and really, every lamp from Spencer's. Does anyone have a new Lava Lite lamp from the last few years that doesn't have this problem?!