I have a MySQL (5.0.22) database for a MediaWiki installation that's beeing reported as corrupt. I've tried all the tricks in the manual to try to fix it, but nothing works.

I tried REPAIR TABLE, which reports the table is fixed, but then a CHECK TABLE returns

+-------------------------+-------+----------+------------------------------------+
¦ Table          ¦ Op  ¦ Msg_type ¦ Msg_text              ¦
+-------------------------+-------+----------+------------------------------------+
¦ itdocs_wiki.searchindex ¦ check ¦ error  ¦ Key in wrong position at page 4096 ¦ 
¦ itdocs_wiki.searchindex ¦ check ¦ error  ¦ Corrupt              ¦ 
+-------------------------+-------+----------+------------------------------------+
2 rows in set (0.00 sec)

So I logged out and stopped the MySQL daemon and ran both myisamchk -r and myisamchk -o to no avail:

# myisamchk -r searchindex.MYI
- recovering (with sort) MyISAM-table 'searchindex.MYI'
Data records: 92
- Fixing index 1
- Fixing index 2
- Fixing index 3
# invoke-rc.d mysql start
Starting MySQL database server: mysqld.
# mysqlcheck itdocs_wiki -p
...
itdocs_wiki.searchindex
error  : Key in wrong position at page 8192
error  : Corrupt
...
# invoke-rc.d mysql stop
Stopping MySQL database server: mysqld.
# myisamchk -o searchindex.MYI
- recovering (with keycache) MyISAM-table 'searchindex.MYI'
Data records: 92
# invoke-rc.d mysql start
Starting MySQL database server: mysqld.
# mysqlcheck itdocs_wiki -p
...
itdocs_wiki.searchindex
error  : Key in wrong position at page 4096
error  : Corrupt
...

So, I'm unsure how to proceed. Any ideas?

Thanks!