A disappointing error from Apple’s Backup software this evening:

…will no longer back up files to your iDisk because it has more than 60 backups. Create a new plan or convert to a scheduled plan.

I am using Mac OS X 10.6.3, aka Snow Leopard, with Backup v3.2 (v417).

Apple's Backup limited to 60 manual back ups

Why is Backup’s manual task limited to 60 back ups? I have plenty of iDisk space; gigabytes of unused space in Apple’s data centres, just waiting for my files to be backed up to.