I have a network of Macs at home, both wired and wireless. When one of the laptops have been in sleep mode, it takes forever to 'find' the network. Why? Sometimes you can see the symbols of the other computers in Finder - in some cases they won't show at all. If you hit cmd-K, nothing happens. It can take up to 30 minutes before you can access other computers on the network. This is unacceptable. One laptop is a MacBook Pro with Mac OS X 10.6 and the other one is a MacBook Air with Mac OS X 10.7 Please help! I need this fixed!