In the last 9 months i have had 2 pairs of these headphones having only paid for one as Amazon messed up the order and took a while to deliver.
They are ideal and great sounding for listening to my Ipod, until that is they pack up. Both in exactly the same way, after about 3 - 4 months of use the left headphone has randomly just stopped working.
I have not mis treated them, put them on my desk yesterday morning and when i went to put them in when i was leaving work there was just no sound in the left headphone.
Either there is a common fault with these phones or i have been amazingly unlucky in having both pack in with the same problem.