I am unable to install Joomla at www.gcapower.org . the message I get is that the site is not empty. So I go there and delete everything, including the previous datafile and mysql server. Everything. And then I try again. I have successfully intalled a Wiki and a Wordpress - can't understand why the Joomla won't work...
Did you check to make sure there are no hidden files? Your ftp client will probably not show them by default - you can check via the shell with the command ls -la, or you can make sure you client is configured to show hidden files.
That was it - they fixed it for me and tomorrow I'll see if it works ok - thanks!