I call the commands mostly by clicking the icons ,

 

when I clicked the "line" icon in draw toolbar , I could draw 3 or 4 lines and the it break the command and as you see I got "cancel" in command line , I have to mention that if I work very slowly , I mean click very slowly on the mouse bottons it draws more than 4 lines,

 

something else that I want to mention is - that when I formatted the computer I installed the Nortons symantec antivirus , made all the microsoft windows updates from the site and than installed autocad 2010. thats all . 

 

Did I miss something that should be installed?

 

this phenomenon occur with my 2 computers at work , and 1 computer at home , with my laptop the autocad 2010 works fine.

 

 

 

  

 

You're right I get numbers starting with 3 , but as you can see with the copy-paste that I did:

 

(3 (1675.66 1289.84 0.0))
(3 (1826.83 1289.84 0.0))
(3 (1838.46 1285.98 0.0))
(3 (1788.07 1270.55 0.0))
(4 0)
(3 (1508.99 1270.55 0.0))
(3 (1164.01 1255.12 0.0))
(3 (1043.84 1193.39 0.0))
(3 (1276.42 1162.53 0.0))
(3 (1629.15 1239.69 0.0))
(3 (1834.58 1309.13 0.0))
(3 (1958.62 1320.71 0.0))
(3 (1946.99 1301.42 0.0))
(3 (1718.3 1258.98 0.0))
(4 0)
(3 (1361.69 1247.4 0.0))

 

I get null (ZERO) every 9 clicks, what part of the hardware cause the problem? do you still think I should replace my mouse?!

 

Thanks