[otrs] Take user Slow response

Hello I've got a problem, when entering a new phone view - The "Take user" option after selecting user, takes up to 20 sec. before it's activated. The same goes for the "to" field. Also when pressing "Create" it takes much longer time than it did before. I've got about 20 customer registered Running on 2Ghz, 256Mb 40gb winXP What could be wrong? Svein