I've just replaced my Lachesis at Ban Leong, previous unit developed erratic blinking light right after I updated its firmware to the latest version.
Sent an email to Razer Support about it, and they replied within one day with list of trouble shoot/workaround, none of which fixed the problem. Having replied to that email, they asked me to get it replaced by the retailer/distributor.
Service by Razer was top-notch, as usual. Replied all my emails within one day.
So I came by to Ban Leong's office just now and got it swapped with a new one. Service was quite slow, had to wait for quite a while, but whatever, I got a new mouse.
I've just sent another email to Razer Support to ask if I should re-register the new mouse, and should I update the firmware again.
Overall I was quite pleased with the whole thing. Good job Razer/Ban Leong.