That's a real relative one. Depends really on your provider, time of day etc , amongst many different factors as to how long it takes for your website to load. It may just be on your system at home, ie your internet provider. Try loading your site on a friends computer, at an internet cafe etc, to see whether this is really a problem.

If it seems to take forever on all of them, you could always try Technical Support and get them to test it for you