sql Error ???? Was working FINE ??

Forum has been working FINE - now suddenly I'm getting errors all over the place

This is the latest one ....

Database error in vBulletin 2.2.9:

Invalid SQL: select threadid,forumid,title,postusername,lastposter,las tpost from thread WHERE visible=1 AND open!=10 AND thread.forumid NOT IN (14,9,10,227,228,229,230,232,231,6) order by lastpost desc limit 10
mysql error: Can't open file: 'thread.MYI'. (errno: 145)

mysql error number: 1016

Any ideas ?

[filburt1]

Run the query:
[sql]
REPAIR TABLE thread;
[/sql]

[dawl]

AAAAAAAAAAH thank you !!!!