Despite upgrading my Airport Express to the latest firmware, I have still been having continuing reliability problems with the Airport Express “disappearing” from my network. As a result certain devices (such as my iPhone and my printer) which rely on the 802.11g network can not find the wireless network. The only solution is to unplug the Express and plug it back in again.
There appears to be no pattern to it falling over and as I don’t print that often and I am less likely to need connectivity on my iPhone at home, I am not always aware that it has fallen over and needs rebooting.
I am going to at this point not replace it just yet, but if it continues to fail then I think I will need to get a new one.