diff --git a/Setting-Up-a-Local-Musicbrainz-Mirror.md b/Setting-Up-a-Local-Musicbrainz-Mirror.md
index 20bd145..80f5272 100644
--- a/Setting-Up-a-Local-Musicbrainz-Mirror.md
+++ b/Setting-Up-a-Local-Musicbrainz-Mirror.md
@@ -2,7 +2,8 @@
 
 The easiest method of installing a local MusicBrainz Server may be to download the
 [pre-configured virtual machine](http://musicbrainz.org/doc/MusicBrainz_Server/Setup),
-if there is a current image available. In case you only need a replicated
-database, you should consider using [mbslave](https://bitbucket.org/lalinsky/mbslave).
+if there is a current image available. **Note**: The virtual machine takes several hours ("overnight") to build search indexes, and the process must be started manually within the VM.
+
+In case you only need a replicated database, you should consider using [mbslave](https://bitbucket.org/lalinsky/mbslave).
 
 Or alternatively [set up MusicBrainz Server from source](https://github.com/metabrainz/musicbrainz-server/blob/master/INSTALL.md)
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