Acts_as_ferret and DRb server errors

I am seeing this in my ferret_server.log when I do a search:

DRb server: ensure_index_exists for class Myclass1
DRb server: ensure_index_exists for class Myclass2
DRb server: ensure_index_exists for class Myclass3
DRb server: ensure_index_exists for class Myclass4
#method_missing(:id_multi_search, [“Myclass1”, “test*”, [“Myclass4”,
“Myclass3”, “Myclass2”, “Myclass1”], {:limit=>:all}])

But everything is working fine. Classes are indexed and searches
return the right results.
This happens on development and production.

Any ideas?

Opps - I meant this line is coming up on production and dev:

#method_missing(:id_multi_search, [“Myclass1”, “test*”, [“Myclass4”,
“Myclass3”, “Myclass2”, “Myclass1”], {:limit=>:all}])

(the others are just debug statement on dev).

thanks.