help-MBP 2009 won't connect to internet after sleep

[itsanywhere]

So my brother in law bought a used apple desktop a while back and after it sleeps, it never connects to the internet so you have to turn it off and on a couple times. Unfortunately, my 2009 mbp is now doing that too.

I haven't dropped it ever and I didn't spill anything on it.
This began just a few days ago and I tried to ignore it at first but I can't. I end up having to turn wifi on and off 8+ times a day...which is very very frustrating. It sleeps and the wifi bars are full but it never connects. It has to be turned off and on.

The only thing that is different from the day I bought it (At the apple store) is that I just upgraded the OSX as soon as it came out a few weeks ago (or whenever it was).

What's wrong? Should I bother going to the genius bar?

 

[Tiki35]

This is definitely an issue with Lion that many people are experiencing. I have the same MBP and what worked for me was going into Network of System Preferences, removing all the other WIFI networks that you're not using and unchecking ask to join new networks. Hopefully Apple will soon fix this.

 

[itsanywhere]

Good to know it's not just me. thanks!