dgreenhouse

Sounds like some of the sites are getting hacked?

In a phpMyAdmin query dialog:

UPDATE wp_users SET user_pass = MD5(‘your_new_password_here’) WHERE user_login = ‘your_admin_OR_user_name_here’

Grab the original (hopefully you have it stored locally) wp-settings.php and upload it to the correct location on the server.

As far as the other blog overwriting the file, you might want to change to multi-sites or ensure the blogs are totally separated in different folders.

This might help.

Settings->Permalinks.

See: https://codex.www.ads-software.com/Using_Permalinks