My wireless connection on my Powerbook has been really finicky lately, which I just blamed on my crappy cable company (screw you Charter!). Anyway, tonight I lost my connection a few times so I went to reset my router, and noticed my dads MacBook Pro had a perfect signal and working internet I assumed something was wrong with my Airport card then. I took it out and found this..... My battery is perfectly fine, no traces of any sort of leak. What else could this stuff be? It was crusted on and I had to gently scrape it off. Any ideas? Nothing's ever been spilled on my PB. I cleaned everything off and its working fine at the moment, but I'm just a little worried about finding something like that inside my PB.