Seriously though folks....
Another thing to look at -- check the peg holes. I have seen that the G string, being small and fairly high tension, can form a slit into the side of the hole toward the bridge. If this gets bad enough it increases the breakover angle which in turn leads to more breakage.
On the other hand make sure the string is breaking where it passes over the saddle and not where it comes out from under the peg. If the latter then see if the eye splice is protruding out from the peg. If it does (and you are using the right strings) then the inner face of the inner bridge may be indented, allowing the string to come out too far. This is easily fixed with a small brass plate attached inside the body to reinforce the inner bridge. Or you can shade-tree the job by threading a #4 brass washer down the string to bear against the inner bridge (but then you have to feed the string up from inside the guitar).
-Glenn