Seem to have database corruption - threads not displaying

[Mosh]

Hi all,

Hope someone can help.

I ran a normal Repair/Optimize Tables in the AdminCP - and after that I seem to have lost the ability to view posts and threads back to at least July this year, they show up when browsing forums and doing searches but when you open a thread there is not content and when you click on the last poster then you get this error message:

No Thread specified. If you followed a valid link, please notify the administrator

When you try to reply to a stuffed thread then you get this error:

Sorry! This forum is not accepting new posts.

When looking at the Table Status, everything seems to be OK.

Is there any query I can run to recover the threads/posts? I am desperate.

Thanks in advance.