First of all thank's for the reply, I'll try to clean the connector pins as u said.

When the connection drops is always the same thing, If i click at the Wifi connection icon the only thing it said to me is: "No AirPort card installed". Isn't never a sleep problem and for the software is the same thing, isn't the same app running, sometimes i was running mail and sometimes only safari or OS updates.

I was thinking at the temperature problem too cause, sometimes, when i was using the ac/dc connection it seams to crash a little quickier than normal but it can be only my impression.

thx, Riki

[quote|Riki]First of all thank's for the reply, I'll try to clean the connector pins as u said. When the connection drops is always the same thing, If i click at the Wifi connection icon the only thing it said to me is: "No AirPort card installed". Isn't never a sleep problem and for the software is the same thing, isn't the same app running, sometimes i was running mail and sometimes only safari or OS updates. I was thinking at the temperature problem too cause, sometimes, when i was using the ac/dc connection it seams to crash a little quickier than normal but it can be only my impression. thx, Riki[/quote]