Shift Key and brushes problem

I used to be able to hold the shift key down and then click to make a straight conection between two points with the the standard brushes. Now this no longer works with the standard assorted brushes but still does with other brushes. Any ideas?

Brush spacing? Check you brush options palette.

Check the "smoothing" option, seem to remember that this affects it somehow.

Reset the Brush Tool.

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