Installing and upgrading help

Hi everybody,

I started a new installation of Moodle 2.8.7 latest release three days ago. Try it on a provider (all-inkl.com, PHP 5.5.26 as Apache module, MySQL  5.6.24). Connection to database is O.K., 326 tables are created, moodledata directotories are created... after about 13 minutes of script running there are only two words in my browser shown: Installation and System.

The site´s source code (browser view) ends up with

<div id="page" class="container-fluid">

    <header id="page-header" class="clearfix">
        <h1>Installation</h1>    </header>

    <div id="page-content" class="row-fluid">
        <section id="region-main" class="span12">
            <div role="main"><span id="maincontent"></span><h2>System</h2>

When I call the moodle site again, the installation tries to continue but it can't, because the table already exist.

What is the problem?!?

This is not my first installation, but the first on a provider (the other moodle site were on our maschines at work).

Perhaps anyone has an idea ...

Andrea