Network Drives and Bugs - A Word of Caution

A couple of weeks ago I replaced my trusty Buffalo 802.11b/g wireless router with an AirPort Extreme Base Station so that I could set up a network drive using a 500GB USB hard drive attached to the AEBS, which was considerably less expensive than buying a dedicated network drive/file server appliance.
Yesterday my Apple TV lost its network connection for no apparent reason and I was unable to reconnect it. After resetting both the Apple TV and the AEBS I still could not establish a connection due to an "incorrect password" that was not incorrect. After re-entering the same password again into the AEBS and then the Apple TV I could finally reconnect. I would think that this problem would be attributed to a software bug in either the AEBS or the Apple TV.
During the re-syncing process I started getting error messages that iTunes could not find many of my files. It turns out that iTunes could only find files that were imported into it after I moved the library to the network drive. Files that had been imported prior to the network drive had to re-imported back into iTunes before it would recognize the correct file path for these files even though the correct file path to the network drive was specified in the iTunes Preferences.
It appears that iTunes was not automatically checking the library path specified in the Preferences settings for the files it couldn't find, possibly the result of another bug in iTunes.
iMac Mac OS X (10.4.9) The more I think, the more I think I shouldn't think more.

In any case, it
shouldn't matter whether the files were pre-loaded or
copied over the network as long as the files are
actually on the drive and the specified file path is
correct.
The file path specified in Preferences > Advanced > General just specifies where the iTunes Music Folder is located, not the path to any particular media file, which could be anywhere. Changing this preference affects all future files imported into the Music Folder but not those already in the iTunes library. IOW, this is more like a default location than a global file path.
The library file is a database stored on the local drive in ~/Music/iTunes/iTunes Library. It contains the iTunes metadata reference record for each media file, among other things. There is also an iTunes Music Library.xml file in the ~/Music/iTunes/ folder, used by other applications. (See What are the iTunes library files? for more about this.)
The content of these files is maintained by the iTunes app, not the file system. So if you manually move your iTunes Music Folder to another location (IOW, not through the application), the database may not be updated properly, leading to error messages because the file path info may be wrong.
To avoid this, you should follow the procedure described in iTunes for Mac: Moving your iTunes Music folder or iTunes for Windows: Moving your iTunes Music folder.
I believe ... the lost files in iTunes may be the
result of software bugs in iTunes, Apple TV
and/or AirPort Extreme.
For this much at least, the "bug" is in your expectation of what setting the iTunes preference does, not in the operation of the application itself. It may or may not have anything to do with your other problems, of course.

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