Razer has issued a new driver for its Deathadder and Lachesis mice. In addition, owners of the latter can also grab firmware 1.91, which fixes the infamous jumping issues.

Just wanted to give everyone a head's up that Razer has just released new updates for both the Lachesis and the Deathadder gaming mices. Deathadder owners may now download the new v1.9 drivers while Lachesis owners, me included, will be offered to download both the new Lachesis Driver v1.10 and firmware 1.91. The latest firmware for Lachesis improves the tracking performance and response time of the mouse. Also, if you're among the little that still experience jump issues with Lachesis, this firmware will help you. I'm starting to update my Lachesis right now. Finally, all bugs that plagued Razer's Lachesis are now fixed.