I have this issue also. It began happening right out of the box. I don't want to do an RMA because it seems like a lot of people have this issue, and RMA'ing just gave them new mice that still had the issue. There are a lot of negative reviews on reseller websites that complain about this issue, (take your pick if you want to check. they're everywhere) so I would guess that remedying this would be top priority.
I'm like others here. I love everything about this mouse, but the click issue (happens for both left and right click for me) makes the mouse unusable for professional play and almost unusable for just everyday play. Please fix this issue asap, as I don't think I can put up with it for much longer, either. It's been a while since this thread was opened, and we've heard nothing.