Crazy yellow circle

[Howard Kaufman]

Attached is a screen shot showing a bold yellow circle.  I don't know what 
it is for, but it makes it hard to draw lines.  This appears when I select 
the line tool and get near another object.  The yellow circle obscures 
other lines making it difficult to begin the line at a precise location. 
Also, this yellow circle jumps on it's own to nearby objects, even though 
snap to grid is off.

Howard Kaufman