I installed Lion a month ago or so - and everything went well. So this isn't a new "Lion" issue. About 10 days ago, my backups stopped working. I use an external drive hooked up to Airport. Time Machine could not complete the backup. No backup disk has been selected. Open Time Machine preferences to select a backup disk. So I open Time Machine Preferences and choose Select Disk. All I see is "Set Up Other Time Capsule". No disk to choose from. Everything looks fine in Airport Utility... Any ideas?