I am running a few sites that use 2.3.2 and a few days ago, they all went more or less blank. The themes are still there, but the content is gone.

For example:

http://www.chslax.com
http://www.evlax.com

I have not made any changes to them.

If I try to access a link to a module directly I get:

"Selected module does not exist"

For example:

http://www.chslax.com/modules/piCal/index.php

I can still bring up my user info at ../user.php
I looked at the source code, but it is unchanged and the modules are still there.

There is no error reported about not being able to access the database.

I have one old site that uses Xoops 2.2.x or 2.0.x and it looks the same as it did before.

Does anyone know what could be the cause? Have I been hacked or did my hosting service (Dreamhost.com) do something bad?

Thanks,
Dave ...

Maybe your hoster moved you to a new server.
Verify that the physical path still corresponds with the definition in mainfile.php.

Maybe try also by cleaning your cache directories.

I think the path is okay. If I try opening admin.php from a browser, I don't get an error message about connecting to the database, there is just nothing there to administrate.

I looked at my database with phpMyAdmin and clicked on the xoops_modules table it showed the following error:

#1034 - Incorrect key file for table 'xoops_modules'; try to repair it

Also, when I look at the shart of all my tables, 'xoops_modules' as well as a number of others are listed as "in use" in the Collation column.

Here's a screenshot from phpMyAdmin:
http://davehenning.com/pages/xoops.png

Is that normal?

Does that mean I got hacked?

It's strange but it happened to three sites at once. It sounds like a mailcious bot of some kind.

Try to make a backup of your database (if possible).
Then try to repair your database tables.
I don't think you are hacked. Probably some database / server failure.
Maybe contact your hoster also about the problem.

Try to upgrade and reinstall, first try whit 1 module, if you have a backup is better, if not you have to upgrade the xoops core, that problem has alredy reported in that versión of xoops (search).