I am using Linux Draftsight 64 bit 2015 SP2 on an HP G72 with an OS of Ubuntu ver 15.04.  The laptop has a built in touchpad, but cannot be turned off in the bios. I can turn it off within the OS, however.  I also am using a wireless mouse which I find to be device causing my issue.  The wireless mouse exhibits jerky, slow response ONLY within the drawing being worked on. Adjusting the update speed within the OS has no noticable effect. Turning off the touchpad doesn't change this behavior of the mouse. Moving the mouse out of the drawing and to the various Draftsight toolbars next to the drawing area, the mouse now performs normally.  The touchpad works fine whether on the drawing or the command area.  I have replaced the wireless mouse with a usb mouse and observed that the erratic movement is now with the usb mouse.  I did not have this issue with last years (2014) Draftsight version.   I sure would appreciate some help with this issue.   Thanks

Barry