I have a problem that I am hoping someone out there can help me with.

I have a 13" MacBook purchased in late 2008. I have it hooked up to an Airport Extreme and until about 6 weeks ago it was working perfectly with no problems. Then I updated something and I can't remember what it was and now my Internet connection breaks whenever I'm running on battery and going from one site to another.

So just the other day I read about an Airport Client Update that seemed to be addressing my exact problem. So I decided to use this update. First, I was instructed that I had to be using OS 10.5.8, so I updated from 10.5.7 to 10.5.8. Then I added the Airport Client Update. But. I still have the same problem as before. Any suggestions?

Thanks for any help.