Hi, i just bough a Xornet II two days ago, pretty good mouse i would say but i have some problems with the software v1.0 - Fw v1.2. To keep it short, the few bug i noticed : - "Apply" boutton has a really weird behaviour, hard to say if it really apply the settings or not, there no blinking or any other feedback when you clic on it, but the white line arround the button disapear if you double clic it.. this feedback is important otherwise it look like the soft has freezed or not apply the setting. - "Lock OS Setting" doesn't work, i m still able to change and save them on windows parameter and even after reboot they're still saved. - LED mode "Rapid fire" doesn't work at all, light is always on, no matter how many time i try to change it. - "Automatically start on windows startup" do nothing, it always start on windows startup anyway, and very important not minimized in taskbar like any good auto start soft should do. - And the worse part, sometime the mouse is totally unuseable (most of time after a reboot) because of the "Sensor lift off distance" setting , i have to plug an other mouse to take back control of the cursor. Weird thing is sometime it track perfectly on Low/ Middle/ High, sometime it doesn't track at all on low and barely track on middle, this on full black cloth mousepad that never had tracking issues with any other mice on avago sensor. Since the mouse is all new i hope it's just some teething troubles and futur soft / firmware will fix it, i would be very sad to leave this mouse just because of bug, first time i find a mouse that fit so well in my hand.