Anyone seen something like this before?

2012-07-09 04:48:59 UTC[4137] ERROR  remoteWorkerThread_1: "select
"_sl".finishTableAfterCopy(20); analyze "public"."reviewsapp_review";
" PGRES_FATAL_ERROR ERROR:  could not determine which collation to use
for string comparison
HINT:  Use the COLLATE clause to set the collation explicitly.
CONTEXT:  SQL statement "reindex table "public"."reviewsapp_review""
PL/pgSQL function "finishtableaftercopy" line 27 at EXECUTE statement

I'm replicating an 8.4 master to a 9.1 slave as part of an upgrade.
The only thing unusual about this table I can see is the column using
the debversion type, but we have successfully done the 8.4 -> 9.1
replication with other databases using that type before.

                                                 Table
"public.reviewsapp_review"
          Column          |           Type           |
                Modifiers
--------------------------+--------------------------+----------------------------------------------------------------------------
 id                       | integer                  | not null
default nextval('reviewsapp_review_id_seq'::regclass)
 softwareitem_id          | integer                  | not null
 version                  | debversion               | not null
 architecture_id          | integer                  | not null
 repository_id            | integer                  | not null
 reviewer_id              | integer                  | not null
 date_created             | timestamp with time zone | not null
default '2010-12-09 20:47:18.910573+00'::timestamp with time zone
 rating                   | integer                  | not null
 summary                  | character varying(80)    | not null
 review_text              | character varying(5000)  | not null
 language                 | character varying(10)    | not null
 hide                     | boolean                  | not null default false
 usefulness_total         | integer                  | not null default 0
 usefulness_favorable     | integer                  | not null default 0
 usefulness_percentage    | integer                  | not null default 0
 app_name                 | character varying(100)   | not null
default ''::character varying
 date_deleted             | timestamp with time zone |
 usefulness_wilson_rating | double precision         | not null default 0.0
Indexes:
    "reviewsapp_review_pkey" PRIMARY KEY, btree (id)
    "reviewsapp_review_architecture_id" btree (architecture_id)
    "reviewsapp_review_hide" btree (hide)
    "reviewsapp_review_language" btree (language)
    "reviewsapp_review_repository_id" btree (repository_id)
    "reviewsapp_review_reviewer_id" btree (reviewer_id)
    "reviewsapp_review_softwareitem_id" btree (softwareitem_id)
    "reviewsapp_review_version" btree (version)
Foreign-key constraints:
    "architecture_id_refs_id_3635e112ecae648a" FOREIGN KEY
(architecture_id) REFERENCES reviewsapp_architecture(id) DEFERRABLE
INITIALLY DEFERRED
    "repository_id_refs_id_2f7062e6db353aa7" FOREIGN KEY
(repository_id) REFERENCES reviewsapp_repository(id) DEFERRABLE
INITIALLY DEFERRED
    "reviewer_id_refs_id_28b87f276a073e1e" FOREIGN KEY (reviewer_id)
REFERENCES auth_user(id) DEFERRABLE INITIALLY DEFERRED
    "softwareitem_id_refs_id_677a12388e4ffc27" FOREIGN KEY
(softwareitem_id) REFERENCES reviewsapp_softwareitem(id) DEFERRABLE
INITIALLY DEFERRED
Referenced by:
    TABLE "reviewsapp_usefulness" CONSTRAINT
"review_id_refs_id_286d40f88d5acdc" FOREIGN KEY (review_id) REFERENCES
reviewsapp_review(id) DEFERRABLE INITIALLY DEFERRED
    TABLE "reviewsapp_reviewmoderation" CONSTRAINT
"review_id_refs_id_6bfc7f3d50ef538b" FOREIGN KEY (review_id)
REFERENCES reviewsapp_review(id) DEFERRABLE INITIALLY DEFERRED



-- 
Stuart Bishop <stuart at stuartbishop.net>
http://www.stuartbishop.net/