*bump*
So I have a network that was working OK until I introduced MBP and everything went wrong and the Earth was torn asunder.
I had my modem (which comes with wireless access and routing capability) configured to use WPA. It didn't specify WPA2, so I assumed WPA. There are just two user of the wireless network, the iMac and MBP. Since then, there's been a dialog at random interval on either computer saying that wireless network has been compromised and will be disabled for a minute. I don't have the faint idea in hell what was compromised, unless they were trying to tell me in a cryptic way that my neighbor would like to borrow my bandwidth?
This is quite annoying as this means there's lapses in connection and it mucked up a pending software update among other things and sometime I find I have to turn the airport on either computer off/back on to get it to restore the connection.
Any insights?