Hi,

I'm trying to set up a personal wiki and I'm having trouble getting
search to work.  All my searches give zero results.  I eventually
figured out that the Xapian database that's being created has an empty
postlist table.  The position and termlist tables are all fine, and
when I add new content to the wiki I can see the database is updated
and the search terms are in the position table in plaintext.  But I
can't query for them, even using Xapian's command line tools.

<pre>
mexon:~/Test/.ikiwiki/xapian/default$ ls -l
total 76
-rw-rw-r-- 1 mexon mexon     0 Dec 16 15:56 flintlock
-rw-rw-r-- 1 mexon mexon    28 Dec 16 15:55 iamchert
-rw-rw-r-- 1 mexon mexon    13 Dec 16 15:55 position.baseA
-rw-rw-r-- 1 mexon mexon 49152 Dec 16 15:55 position.DB
-rw-rw-r-- 1 mexon mexon    13 Dec 16 15:55 postlist.baseA
-rw-rw-r-- 1 mexon mexon     0 Dec 16 15:55 postlist.DB
-rw-rw-r-- 1 mexon mexon    13 Dec 16 15:55 record.baseA
-rw-rw-r-- 1 mexon mexon     0 Dec 16 15:55 record.DB
-rw-rw-r-- 1 mexon mexon    13 Dec 16 15:55 termlist.baseA
-rw-rw-r-- 1 mexon mexon 16384 Dec 16 15:55 termlist.DB
mexon:~/Test/.ikiwiki/xapian/default$ delve -a .
All terms in database:
mexon:~/Test/.ikiwiki/xapian/default$ 
</pre>

I don't know how to debug from here.  Clearly ikiwiki is doing
something right when it's building the database, but one of the tables
is missing.  Can anyone guess what's wrong, or tell me where to start
troubleshooting?

I'm using Centos 5.  Xapian is version 1.2.5.  Ikiwiki version 3.20111107.