Problem (bug?) wih like

I'd like to contrast an error that I get when using like in text
fields.

I have a table A an a view v_A of A. Name is a text field (person
names). Look at these queries:

1)

select * from A where name like '%DAVID%'

It works pretty well and fast. Result:

DAVID
DAVID FOO
DAVID
.../...

2)

select * from v_A where name like '%DA%'

It works too, with a result bigger (obviously) than first query.
Result:

DAVID
DANIEL
DAVID FOO
.../...

3)

select * from v_A where name like '%DAVID%'

It freezes psql. Why?. It seems a bug, doesn't it?. Thanks for any
info.

David