DALLAS ― Sony's PSP portable video-game device that went on sale last week seemed an instant sensation, marked by midnight launch parties at stores and lines of eager gamers huddled in rain and cold to get the system. But while Sony is touting the rollout as a success ― and many retailers did sell their entire stock ― the event might not have been the complete blockbuster that was expected. On the launch day Thursday, Sony officials tentatively claimed a total sellout, as did many stores. But some retailers said yesterday they were surprised at relatively lackluster interest on launch day and still have PSPs sitting on store shelves. Internet message boards over the weekend were dotted with comments from gamers around the country reporting similar stockpiles. http://seattletimes.nwsource.com/html/businesstechnology/2002223024_psp29.html