Unless you want to delete the menu section (on the left hand column) then i suggest amending the php file itself:
admin.fireboard.php
This can be found in Joomlaadministratorcomponentscom_fireboard (if you installed joomla in a folder called "Joomla"
around line 382 (ish) you should make the following amendment:
$database->setQuery("SELECT a.*, a.name AS category, u.name AS editor, g.name AS groupname, h.name AS admingroup"
. "nFROM #__fb_categories AS a"
. "nLEFT JOIN #__fb_categories AS b ON b.id = a.parent"
. "nLEFT JOIN #__users AS u ON u.id = a.checked_out"
. "nLEFT JOIN #__core_acl_aro_groups AS g ON g.group_id = a.pub_access"
. "nLEFT JOIN #__core_acl_aro_groups AS h ON h.group_id = a.admin_access"
. "n GROUP BY a.id"
. "n ORDER BY a.ordering, a.name"

;
/*/what the code said before the edit below
// $database->setQuery("SELECT a.*, a.name AS category, u.name AS editor, g.name AS groupname, h.name AS admingroup"
. "nFROM #__fb_categories AS a"
. "nLEFT JOIN #__users AS u ON u.id = a.checked_out"
. "nLEFT JOIN #__core_acl_aro_groups AS g ON g.".((FBTools::isJoomla15())?"":"group_"

."id = a.pub_access"
. "nLEFT JOIN #__core_acl_aro_groups AS h ON h.".((FBTools::isJoomla15())?"":"group_"

."id = a.admin_access"
. "n GROUP BY a.id"
. "n ORDER BY a.ordering, a.name"

;*/
Its caused me some problems one way or another, why can't fire board get rid of bugs to begin with!?