so almost 3 months ago i got my first mac, a 17" powerbook. i got a wireless router (went with a Netgear Super G Wireless Router). the wireless network worked great instantly. i added an Airport Express in the living room about a month ago so i could use AirTunes. all worked great. till now. a few days ago i noticed my wireless signal on my powerbook was down to just that first dot and the first line above it. internet was going pretty slow. i tried a few things, restarting the computer, resetting my router and my modem, yet still the low signal. I live on campus and i've always had at least 5 other wireless networks recognized and i could connect to (got lots of neighbors who don't know how to secure their networks!). now my powerbook doesn't show them and doesnt even show mine sometimes! nothing in the setup has changed. i've upgraded to Tiger, but it was working fine since i upgraded till a few days ago. my router is sitting right next to my desk, i usually have a completly full signal obviously. i brought my powerbook into the living room to see if it was just too close to the router and the signal dropped completely. i also moved my airport express and now it's not recognized by my powerbook either! is my Airport card in my Powerbook just going already?! any ideas would be great. i'm still under the 90 days of phone support so i figured i'd call Apple today after work. but i just thought considering it has a hard time picking up any network now that it's the computer. oh, and my pc right next to my powerbook is hardlined to my router and still has no troubles, and no one else on my house's network is having problems (laptops on wireless network included!) sorry i made this so long, thanks for those who read it and offer their opinions!!