Very slow internet connection
Spent two hour with Apple to determine why this 10.7.5 is 1/4 as slow connecting to the internet as an older 10.4.11 operating side by side..
iMac
Not sure what any of this information would have to do with an AirPort Express, AirPort Extreme or AirPort Time Capsule......the products pictured below that we support in this forum. Can you clarify things by providing more details for us?
As it stands, you have an issue with the Mac that is running 10.7.5, so you might want to post in the support forum for that product.