After several months of trying to use iDisk between 2 machines, that has gone by the wayside. The primary purpose was to sync certain files between my desktop and media machine. One of the main files was my 1Password keychain file. This was done using the local syncing of a copy of my iDisk.
I consistently had errors with the orange sync icon bouncing in the dock waiting to sync a file, while the other machine reported a 0 byte file on the iDisk. With the introduction of a third machine (Macbook Pro) it simply wasn’t worth the hassle.
Stepping in for iDisk is DropBox , which I have been using for ‘cloud’ storage for some files on one machine. While DropBox has a basic free version, it is likely I will be using a paid version.