[ADMIN] FATAL 2: (pg_clog ... no such file or directory)

[kaolin fire]

Where would I go to start tracking down recurring error messages of the 
sort:

FATAL 2:  open of /usr/local/pgsql/data/pg_clog/06F7 failed: No such 
file or directory
FATAL 2:  open of /usr/local/pgsql/data/pg_clog/0707 failed: No such 
file or directory

06F7 and 0707 do not exist.  Currently just looks like it goes from 
0000 (May 14 2002) to 004F (Feb 6 2004, and counting).

I'm running 7.2.4

-kaolin fire

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