I think I have a similar problem - see my yesterday message on this forum "double click".
While you and me are waiting for a correct answer, I suggest you don't use Administration to load your .php pages, but directly your internet explorer. That's the way I do.
I write the URL in the browser, I click to enter, it searches indefinitely, I wait a little then click a second time on the URL and I get the page immediately.
I do the same to enter MyAdminSQL: I write in IE [
localhost], click twice, get the proper file, click twice and enter in MyAdminSQL.
Does it work for you?