I set up a wireless connection at home and it's working fine for 2 years for 3 of my other computers with windows os. I bought a MacBook Pro a few days ago, and I found that its wireless connection stop working after every 2 or 3 hours(purely randomly), and there is nothing wrong displayed on the screen.

What I have to do is to click "open network preferences" and then select "assist me". It will work smoothly after I do this action. I am very curious about if anyone else has the same problem with your notebook. And how did you fix it.

I also have an iPod Touch, it's wireless connection stop working even more frequently, what I do with it is to manually reconnect to my home router. But sometimes it still doesn't work.

Thanks in advance for any valuable comments. Please forgive my non-native English.