Demand for smartphones has reached an all-time high thanks to iPhones and the Palm Pre but is hurting the BlackBerry as a result, according to new data from ChangeWave. A mid-June study from the research group has 14.4 percent of those tracked looking to buy some kind of smartphone within the next 90 days, a record high and a large jump from 11.2 percent in March. Of these, a full 44 percent now