You may occasionally receive an error message about disk space when you are using your MobileMe account – for example, when trying to copy files to your iDisk you might see: “The operation cannot be completed because the disk is full.” When using MobileMe Sync you might see: “MobileMe Sync Error: Unable to complete sync. Your iDisk is almost full.” When using iWeb to publish to MobileMe, you might see: “Publish Error: Your iDisk is full.” When using Backup to back up to your iDisk, you might see: “Backup failed: There is not enough free space at the destination for the backup.” In some cases, you may receive different errors than those mentioned above. Keep in mind that iDisk is the backbone of many MobileMe services

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MobileMe: "iDisk full" error

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