Wordpress Needs to be Reinstalled? Not there?

[seobrien]

So I visited my site today only to have it redirect to the install page /wp-admin/install.php where I fear someone else can hijack my site.

The files are still on the server (and I hope the DB is intact).

What do I do??? Do I reinstall or will that overwrite something?
Same name and email address?

Thanks

[Mittineague]

Did you just install an upgraded version and forget to go to "upgrade.php" to update the database?

[seobrien]

No, I have not updated any WP files or the database

[Mittineague]

I just went to the "store" and "seo" blogs in your sig links. Both loaded OK and when I went to the login screens, they loaded OK too. Is the redirect happening when you try to log in? Or are you having problems with a different blog? Are any messages appearing on the screen that may help me track down what is involved with this?

[seobrien]

Sorry this has been solved. For others trying to diagnose the problem:

Host moved the location of the database so wp-options was not calling the right location. All other indications were that things were set up so this is hard to identify without looking in MyPHPAdmin or whatever you use to look at your SQL DB.

Need to work with host to fix as they have to indicate the new location.