http://www.reuters.com/newsArticle.jhtml?type=topNews&storyID=7389443
"Taser International Inc. has warned police departments that its newest electric stun gun recently failed to subdue some suspects, and it will increase the power of the weapon, The New York Times reported on Friday.
The newspaper said that, according to a bulletin the company has sent to police departments, it will increase the power of the X26 by about 14 percent to make the gun more effective. "