Getting an install screen sometimes after upgrading to WP 2.5

Hi,

After upgrading to WP 2.5 I run into several issues that took some time to solve. I solved most by now, but one keeps me in check, and I cannot find any solution:

Sometimes (Yes, just “sometimes”) I get the “http://blablabla.com/wp-admin/install.php” blank fresh install page when I try to access any page from my blog (both in admin pages and in the end-user pages).

The issue lasts for a while (I try several times to load pages), and then finally the blog comes back from the land of the dead…

It doesn’t seem to have any logic… I suspected it had something to do with the MySQL database, but I couldn’t find anything.

Did anyone have the same issue and know how to solve it? I suspect it also happens to my visitors…