MacBook Air drops WiFi connection - solved

We had to change the wifi security to WEP to accommodate a primitive PC laptop. After that I had to re-log in to the wifi network every time it woke up. Absolutely maddening.

Lots of internet searching and different solutions later, eg delete network and re-add it, etc. Finally a sensible suggestion from someone: Run Repair Permissions from disk utility.

Problem solved, connection drops no more. So simple!

A few weeks later ...

This is from me! I really was doubtful that the solution could be that simple, but my MacBook Air was dropping the connection again, this time to a brand new BT HomeHub router.

So I ran Permissions Repair and guess what, it's fixed again! Hope it lasts.

And subsequently ...

Dropped again - this time I just did "turn WiFi off" from the top menu bar, and then on again, and it picked up again.