Network keeps dissasociating ?

AirPort: Link Down on en1. Reason 4 (Disassociated due to inactivity)

This is the log entry I am getting when my macbook randomly disconnects from my network.

My airport extreme is still up and running, as my phone is still connected, but the macbook has lsot connection.

The only way I can fix this is to reboot, something i have done almost every day for about 2 months now.

Does anyone know what this error is ?

Griff.

mrsir2009 said:

Have you tried:

1. Resetting your router and Airport extreme.

2. Resetting your MacBook's whole internet connection.

3. Testing if other computer's can connect to your airport extreme.

Click to expand...

Yes to all 3.
My wife's iPhone keeps the connection.
I have reset everything many times.