DHTML Update Problem

I have made a DHTML application, compiled and packaged it usgin the package and deployment wizard. I then copied the CAB file and the startup page to the web server. When i go to the website on the computer i compiled it on it works fine and it works fine for computers who have visited the page once.

But if i update the project, it only works on the computer i compiled it on, any other computer that has been to the site allready doesn't work, it is like the DLL is't updating.

Thanks in advance

Ceri