If Primary Domain Controller of Windows 2000/2003 Active Directory goes down and Backup Domain controller automatically takes over, then Active Directory will be out of Sync after Primary Domain Controller is restored from a backup

You cannot browse your vaults. Run a task to recompact the vault to resolve the issue

Acronis Disk Director allows you to change the type of a partition

Explanation of why there can be up to 7.8 MBytes of unallocated space that cannot be removed by usual means

The two possible causes are: there are four primary partitions; the file system is corrupt