WordPress installation on the landing page instead of blog itself

Okay so, i’ve installed wordpress quiet a time ago all was fine till one day i went to my blog and got the installation .php. I thought okay, let’s see what happens if i fill out the form. So i filled it and then got this:

WordPress database error: [MySQL server has gone away] SHOW TABLES; WordPress database error: [MySQL server has gone away] CREATE TABLE wp_2terms ( term_id bigint(20) unsigned NOT NULL auto_increment, name varchar(200) NOT NULL default ”, slug varchar(200) NOT NULL default ”, term_group bigint(10) NOT NULL default … etc.

So after that everything worked fine again…

until today. I went to the blog and got installation page again.
Contacted the host support they said “75k MySQL quires per hour per user, you use too much plugins? no? go contact WP support. “

The thing is that all my plugins currently deactivated because i am working on local host now.

So what’s the problem?