Think I figured out why my clearo fell apart. The flavor I had in there had Cherry Blossom from The Flavor Apprentice (it was mixed with other flavors).
From that thread about cracked clearos, I noticed that Triacetin was an ingredient known to cause cracks.
Looking on the Flavor Apprentice site, sure enough, Cherry Blossom contains Triacetin. Not all their flavors do, but that particular flavor does.
The nice thing about Flavor Apprentice (other than the low prices) is that they list their ingredients.
Anybody else out there who has cracked one of these clearomizers? If so, could you tell me what flavor you used and who the vendor was? I'd like to look around and see if I can find out the actual culprit.
Tina, I looked up your Strawnana, but the vendor doesn't seem to list ingredients, so I couldn't tell what the problem might be.