Hi,
I too get the same signal strenght problem on my Vaio laptop. I am running
Visa Ultimate with the Intel® PRO/Wireless 3945ABG wireless card. I noticed
there was a software update on the sony support website specifically for the
wireless features (not sure if it actually updated the drivers) and i
installed it. It didnt solve my problem.
I read something about the power saving features in Vista that could affect
the wireless card's behavior.
but i m also still stuck at 60%..

"Kato" wrote:

> Sorry about the previous post I'm new to this forum.
>
> Anyways here is what I have experienced and found so far I have a Dell
> Inspiron 640m and a HP Pavilion dv9000 both running Vista and both using
> Intel Pro/Wireless 3945abg mini-card's. I too am getting a max signal
> strength of 60% and have searched endlessly for a solution but yet to find
> one. I think I have narrowed it down to a driver issue for either the
> mini-card wan port or the mini-card, most likely the port because I have also
> tried another manufacturer's mini-card with no luck.
>
> Now the reason why I think this is the issue is because my brother is also
> running Vista on a gateway tablet PC and gets 100% plus a number of other
> friends get that result too. After investigating a bit they all use an Intel
> Pro/Wireless mini PCI card not to be confused with the mini-card I have.
> Also I do have another friend that just got an ASUS laptop with the same
> mini-card that I have and also gets 60% signal.
>
> So I guess I now have two choices:
> 1: Live with it until Microsoft, Intel or whoever is responsible comes up
> with a solution.
> 2: Spend some money and attempt to resolve it with a USB wireless device.
> I'm curious to see if this one works I pretty confident it will.
>
> So if anyone can find a solution for this one I would be very grateful
> because I really don't want to use an external device.
>
> Regards,
> Kato