Need help from anyone with a Mac who knows about connecting - or rather NOT connecting - to wifi networks. When we are on the internet, sometimes our connection will slow down, and usually if I check, it is because we are in a spot in the house where 6-8 other wifi networks have become 'visible'. Even though they are password protected, it still seems to mess up our own wifi connection in our house. I don't know why it would but it does. Any way to block those other networks? I already have the networks settings so that it doesn't remember joined networks. Don't know what else to do.