Question DB error

Overnight an error developed and this is all I see on the screen. I'm assuming it is a database error but can not tell which table is effected and needs to be restored.

Here is the info:
ariable value
$0 "
key value
$file "/usr/local/4admin/apache/vhosts/ar10t.com/httpdocs/components/com_kunena/lib/kunena.debug.php"
$line "44"
$function "debug_callstackinfo"
[args] Nested Array
"
$1 "
key value
$file "/usr/local/4admin/apache/vhosts/ar10t.com/httpdocs/components/com_kunena/lib/kunena.debug.php"
$line "66"
$function "trigger_dberror"
[args] Nested Array
"
$2 "
key value
$file "/usr/local/4admin/apache/vhosts/ar10t.com/httpdocs/components/com_kunena/template/default_ex/latestx.php"
$line "154"
$function "check_dberror"
[args] Nested Array
"
$3 "
key value
$file "/usr/local/4admin/apache/vhosts/ar10t.com/httpdocs/components/com_kunena/kunena.php"
$line "683"
[args] Nested Array
$function "include"
"
$4 "
key value
$file "/usr/local/4admin/apache/vhosts/ar10t.com/httpdocs/libraries/joomla/application/component/helper.php"
$line "162"
[args] Nested Array
$function "require_once"
"
$5 "
key value
$file "/usr/local/4admin/apache/vhosts/ar10t.com/httpdocs/includes/application.php"
$line "124"
$function "renderComponent"
$class "JComponentHelper"
$type "->"
[args] Nested Array
"
$6 "
key value
$file "/usr/local/4admin/apache/vhosts/ar10t.com/httpdocs/index.php"
$line "68"
$function "dispatch"
$class "JSite"
$type "->"
[args] Nested Array
"
Installed version: Kunena 1.5.6 | 2009-10-02 | 1806 [ Speaker ] | php 5.2.11 | mysql 5.1.40-1

Hello,

How this issue happens ?
Can-you please enable debug mode to see a better error message ?

Thanks! I have never come across problems like this before and did not even think to use debug.

I turned debug on and it told me which table had crashed so I repaired it and it is working good as new!

It was the fb_messages table which had an error.

I advise you to upgrade kunena to the version 1.5.12 which contains many fixes.