The files being small is not necessarily disaster. If you Wiki was small the table files will be small.
Well I run strings and grep over these files but the only files with useful information are searchindex.MYD and searchindey.MYI
Look at the Mediawiki logfiles, see if they're indicating any database problems. If they are...
Log in to the database with the mysql command line command and run the command "show tables;"
Well here I have a problem. Say the password is password then the command mysql -u wikiuser -p=password maqwiki gives me ERROR 1045 (28000): Access denied for user 'wikiuser'@'localhost' (using password: YES)
And I checked with
sudo mysql_setpermission the permission of that database.
Uwe Brauer