Pending File Moves can display a list of pending files rename / delete operations, that take place the next time the system boots. Often when installin software updates, such as service packs and hotfixes, reboot is required after the install. Pending file rename / delete operation is usually the reason behind the reboot.
Pending File Moves can often show you why you need to reboot after installing something.

The license of this software is Freeware, you can free download and free use this file management software.