Zigbee 2.5 / Arduino + Processing = very slow broadcast?

hi there,

i got a problem with my wireless connection.

if i do this blink-tutorial http://www.interactiondesign.se/wiki/xbee:remote_blink with my arduino and processing, i got a data send delay of 1 second. this seems very high. is there any solution to send the data much faster? did anybody this tutorial, with faster respond?