I've got a problem with an Intersects query....

I have two tables:  Roads, a table of LINE objects that represent a street network, 
and Nodes, a table of point objects which represent the intersection of all lines.  
There are no polyline objects in the Roads table, and the Nodes table represents a 
singular intersection (no intersection points will be repeated).  I then run a query 
to determine all line objects that intersect the intersection node.  For example:

SELECT Nodes.ID, Roads.ID FROM Roads, Nodes WHERE Nodes.Obj Intersects Roads.Obj

When I run the query however, I'm getting all the roads that intersect the 
intersection node as well as other lines that AREN'T EVEN NEAR the intersection node.  
There appears to be a problem with the intersection operator when used in association 
with my line and point objects.  Anyone else seen this before?

- Ian

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