this is in the <modules> and <httpModules> sections and  the NeatUpload entries are before the UrlMaster entries

<add name="UrlRewrite" type="iFinity.DNN.Modules.UrlMaster.UrlRewriteModule, iFinity.UrlMaster.FriendlyUrlProvider" />

I can access the /language/en-us/home.aspx and /login.aspx but only if I dont use the WWW in the url

http://edmedia.com.au Yes

www.edmedia.com.au No error message below

404 Url Not Found
The requested Url (http://www.edmedia.com.au/language/en-us/home.aspx) does not return any valid content.

either way the login registration doesnt work but all the pages are named correctly.  Just have a problem loging-in, registering and I assume login-out

hmm,  how do I do that without being able to login?

Just try 'touching' your web.config to force an application restart.  See if that helps.