When a user changes the value in a spreadsheet cell which is linked to the
catagory label of a column graph, the graph doesn't update autmatically.
Invoking the graph guru and simply clicking OK updates the graph. This is unlike
data values which are updated automatically.

1) new gnumeric

2) a2:d5 gets
	FR	SP	UK
Barrels	230	310	20
Casks	34	53	23
Cases	421	500	60

3) select a2:d5

4) make a column graph 
 4.1) click on graph guru icon
 4.2) select the column graph type
 4.3) click ok
 4.4) click on worksheet

5) alter b2 from "FR" to "France"
==> the graph is not changed, I would expect the label now to read "france"

6) right click on graph to get context menu, select "properties"
==> guru opens, note that preview already has "France"

7) Click the Ok button
==> graph is updated with "france"

--adrian