index marked as crashed = gros probleme, quelq'un peut-il m'aider ? Merci.

[jj35]

depuis ce matin j'ai ce message qui apparait en BO quand je crée ou modifie une fiche produit et en FO l'utilisation du moteur de recherche ne donne plus rien.
Qu'est-ce que c'est que ce problème et comment le résoudre? merci.

Array
(
[0] => Table './_livres_et_rev/ps_search_index' is marked as crashed and should be repaired
[1] => Array
(
[0] => (233,(SELECT id_word FROM ps_search_word WHERE word = 'retro' AND id_lang = 2 LIMIT 1),20)
[1] => (233,(SELECT id_word FROM ps_search_word WHERE word = 'hebdo' AND id_lang = 2 LIMIT 1),20)
[2] => (233,(SELECT id_word FROM ps_search_word WHERE word = '40' AND id_lang = 2 LIMIT 1),10)
[3] => (233,(SELECT id_word FROM ps_search_word WHERE word = 'ford' AND id_lang = 2 LIMIT 1),10)
[4] => (233,(SELECT id_word FROM ps_search_word WHERE word = 'vedette' AND id_lang = 2 LIMIT 1),10)
[5] => (233,(SELECT id_word FROM ps_search_word WHERE word = '1952' AND id_lang = 2 LIMIT 1),10)
[6] => (233,(SELECT id_word FROM ps_search_word WHERE word = 'moto' AND id_lang = 2 LIMIT 1),10)
[7] => (233,(SELECT id_word FROM ps_search_word WHERE word = 'bmw' AND id_lang = 2 LIMIT 1),10)
[8] => (233,(SELECT id_word FROM ps_search_word WHERE word = 'r27' AND id_lang = 2 LIMIT 1),10)
[9] => (233,(SELECT id_word FROM ps_search_word WHERE word = '1960' AND id_lang = 2 LIMIT 1),10)
)

)


END