Phorum Database Error

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Error:

Table './towards01micron/phorum_messages' is marked as crashed and last (automatic?) repair failed (144): SELECT count(*) FROM phorum_messages WHERE forum_id = 7 AND thread = 22202 AND status =2 AND message_id <= 22214

Backtrace:

Function phorum_database_error called at
{path to Phorum}/include/db/mysql/mysqli.php:212
----
Function phorum_db_interact called at
{path to Phorum}/include/db/mysql.php:1532
----
Function phorum_db_get_message_index called at
{path to Phorum}/read.php:203
----