One thing I have been doing quite a lot recently on clients sites is merging multiple Drupal 6 installations into a multi-site setup. This is usually quite painless and can be done within an hour or so, the hard bit comes when none of the display, and you realise that all of the paths in the files table are still set to "sites/default/files" when they should be "sites/example.com/files". Well, there is a quick solution to this.

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