True - there are a few reports of that, but keep in mind that people who've had problems are a lot more likely to post than people who haven't. I've had mine for the last month, in and out of various pockets, bags, etc. and not a single problem with them.
I've also compared the sound with Sennheiser's, Sony's, and Denon's (all 'mid-range' in cost) and personally prefer the V-Moda's by a mile.
To each his own though. 🙂