I posted some info about my experiences with the E9 cartridges burning as you smoke them in the vaporello review thread. I wanted to give this topic its own thread so that more people might see it and be able to chime in with their own experiences. To summarize, I've found that the E9 cartridges physically burn as I used them, sometimes only after 50 puffs sometimes after 150 puffs. I wouldn't even taste the burning but when I opened the cartridge, it was indeed burnt and charred inside. I think most people who use a cartomiser model have experienced the horrible burnt taste towards the end of the life of the cartridge(just before they refill and continue using the cartridge). Also, most people who refill them find that a black burnt liquid sometimes leaks out. (Burnt E-Liquid) Someone else posted pics of this issue here: Sorry I cant post the link yet(<15 posts), but this search term should take you right to some good pics: (can someone else please post the link) disposable-autopsy-smoke51-epuffer I believe that alot of us are actually "Smoking" the cartridge material and "burning" the e-liquid it contains. I'm not sure if this is a Real Health Risk or not. I'd also like to see how many of you are "smoking" this matrerial without even realizing it. Because the heating coil is directly touching the cartridge matterial, I would think this burning is more common than we think. If you can, please follow these simple steps to take apart a used cartridge and share your results with everyone here. Here are the steps: 1. Take a cartridge that you've been using(lets say for about 7 or so cigarettes) which has no indication of burning. (Or try using a fully used-up cartridge and started tasting burnt, its up to you) 2. Using a tweezer, remove the plastic tip on the mouthpeice side. 3. Using a tweezer, pull up on the wire coming out of the center of the cartridge unitl it breaks. 4. Using a tweezer, gently pull the entire roll of cartridge material out of the cartridge. 5. Unroll this material and tell us what you see in the center of the roll. Is it charred and black, then you been inhaling that SMOKE. Do you ever hear a crackling or poping sound coming from the cartridge. I beleive that is the material burning. I held some of the cartridge material over an open flame and it made that very same crackling/popping sound as it burned. It only takes a minute to do this and I'm wondering if the results vary by ecig manufacturer or cartomiser manufacturer. I really don't want to be an alarmist, but I've never seen any other e-cig that actually produces SMOKE. Also, I'm not too concerned about the dangers of e-liquid vapor but this is possibly "BURNING" the eliquid and the cartridge material. Does anyone know if this is TOXIC??