Two days later I said  what was wrong was Swishdefault only.
But I have another problem and I don't know if this problem
has relation with David Norris said.
When I am searching two words or much with one stopword
in the middle(?) or as last to search SWISH-E breaks,
it puts "Segmentation fault". But if I write the stopword at begining
there is no problem.
Is this problem only with Linux??
Anybody to help me????

                                            Ibon
                     University of the Basque Country