There is not much I can do with an error like this
Lost connection to MySQL server during query
This tells me hands down the connection to mysql is being dropped as in the mysql server is going down. This is a server issue. As long as your user database info is correct as it is entered in your
vb config file so should it be entered in our config thats all I can really respond to on this. For any real server issues like this you would need to contact your host and ask them what is up with why your mysql is loosing connection