I just bought a new razor naga, installed synapse for it too, but after about 3 minutes or so after logging into my computer, my keyboard and mouse will not respond. My naga will remain lit but the keyboard will not. Plugging into separate USB ports motherboard and case alike will not reset them. I went into safe mode to disable synapse at startup but when I did, they still lost control in normal boot. Any ideas?

contact razer's rma service.

if ur using windows I highly recommend the 3.02 drivers not the synapse.

you can google for it or below is the link to their website. razer naga epic 3.02 drivers (file size is 38.5mb).
btw my razer naga is not the epic, it's the original 1.0 naga, but i dont have any problems with these drivers (windows xp).
-GL
http://www.razersupport.com/index.php?_m=downloads&_a=viewdownload&downloaditemid=577&nav=0,76,40,144