Line glitch

[lam2008]

A few months ago I downloaded AutoCAD 2011 from the Autodesk website and everything was perfect... until a few weeks ago. When I click on the line tool and select a location to start my line and then move my mouse to change the angle it glitches and does not move in a fluid motion like it should. It moves in a 'jumpy' manner and is slow to respond to me chaning the angle. It seems like the program is trying to update the change in angle or refresh. Like I said, it moves slow and is very annoying. However, when I'm not making a line the program runs fine. This also happens when I use the measure tool and when I'm trying to 'extend' a line. But the most confusing part is sometimes it won't do this at all and will run fine with no glitches, not jumping, nothing.... but then a few minutes later it will go back to glitching. Help please!!

[Dana W]

Look at your drafting settings, particularly the object and polar snaps. The cursor is probably clicking off the snaps at increments one by one.