My system has been newly re-installed, is completely up-to-date (all drivers included), and is very well-protected threat-wise. I've always had this problem, for years, but have gotten around to asking for help just now, other matters having been more pressing. I do not experience this on Linux platforms, only Windows. Here is some info: --------------------------- System Specifications --------------------------- OS1: Windows 7 Ultimate x64 OS2: Ubuntu 12.04 x64 CPU: AMD FX Black 6100 6-Core 3.3 GHz MBD: GA-970A-UD3 GPU: MSI TwinFrozr III R7850 2 GB GDDR5¹ RAM: 4 GB DDRIII HD0: 500 GB Seagate SATA III (2 partitions, Windows & Acronis Secure) HD1: 750 GB Seagate SATA III Solid State Hybrid (2 data partitions) SCR: Acer S232HL LCD Monitor² Native Resolution of 1920•1080 @ 75 Hz ¹Managed by AMD Catalyst Control Center w/ability to overclock CPU & GPU ²Managed by Acer eDisplay Management The problem is that the wireless mice, while they initially, for a very short period of time, function as expected, soon begin exhibiting undesirable traits like being slow to respond (except for context menu requests) and moving jerkily, while the hard-wired mice tend to make unwanted selections and perform actions when no button has been pressed. The wireless mouse is brand new, and is plug 'n' play, needing no 3rd-party software or drivers, but the wired mouse is old, and I'm replacing it later today (so some of those issues may evaporate). My specific question is this: Exactly how should I have "the mouse" configured in the control panel when I find it absolutely necessary to have both kinds of mice working at once? Or, is there a mouse-related application I can download that will fine-tune just a SINGLE mouse to behave as it should? The wireless (Onn) mouse also seems to require EXTREMELY precise positioning to perform left-click actions. ...Or perhaps someone knows of a mouse that does require 3rd-party software that DOES function excellently on Windows 7 x64. Any help would be appreciated.