Nope, dead easy. I don't have shell access on the webserver just ftp, so unzipped it here and ftp'ed the whole show to the server then connect to it with a browser and run the install script using a browser.
It needs access to an empty mysql database and an imaging program on the server. I have both available on mine.
Once it's up, login as admin and run the config option to set themes, add users etc and it's away. Login as a user, create some albums and start uploading images into the albums. Just what I was looking for