I have a wireless network in my home (Microsoft wireless base station - 802.11b). I works very well with my Sony laptop (good reception anywhere in the house or even outside - 100+ ft). However, the reception with my new 15" Al Powerbook is a maximum of 15-20 feet. Is this a problem with the new Al powerbooks or is there a problem with the internal antenna (I only get full strength when I hold the Powerbook within 1-2 feet of the base station).