Cluster fails

Your name :Mark Kirkwood
Your email address :markir(at)ihug(dot)co(dot)nz

System Configuration
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Architecture (example: Intel Pentium) :Intel Pentuim

Operating System (example: Linux 2.0.26 ELF) :Linux 2.2.14-5.0 ELF
(Redhat 6.2)

PostgreSQL version (example: PostgreSQL-6.5.1):7.0RC4

Compiler used (example: gcc 2.8.0) :egcs-2.91.66

Please enter a FULL description of your problem:
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command "cluster indexname on tablename" fails with text
"ERROR : temp123456abc is an index relation".
tablename and indexname are missing from pg_class, but
tablename still exists in the data directory

Please describe a way to repeat the problem. Please try to provide a
concise reproducible example, if at all possible:
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create table testit ( id integer);
create index testit_i on testit( id );
cluster testit_i on testit;

If you know how this problem might be fixed, list the solution below:
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