Acts_as_taggable Generating Funky SQL

I am using acts_as_taggable in my application and on the tagging side of
things, no problem at all. Running edge Rails and PostgreSQL 8.1.

I am then trying to find all my AR objects with a certain tag. The tag
is:
lasvegas and I know that there are at least 3 records with that tag.

So, I’m doing this:

@lists = List.find_tagged_with :any => @search_string, :separator => ‘+’

The problem is that the SQL generated looks like this:

SELECT lists.* FROM lists, tags, taggings WHERE lists.id =
taggings.taggable_id AND taggings.taggable_type = ‘List’ AND
taggings.tag_id
= tags.id AND tags.name IN (‘anylasvegas’, ‘separator+’)

See what’s right after the IN clause? It says ‘anylasvegas’ - why? BTW,
using ‘lasvegas’ returns the correct results.

I used the :any symbol in the finder per the instructions and all the
permutations I tried to get rid of it just gave me syntax errors, etc…

So, am I doing something wrong or what?

Thanks,
HH