If you're using Mojo from the public library system, you're likely to have problems like this. The library uses a proxy server that is horrible with dynamic sites; it is always sending the wrong pages to the wrong people, etc.
It's possible, too, that your browser is caching (remembering) the pages on Mojo.
Try this first... hold down the CTRL key and then press the F5 key (also referred to as CTRL-F5). This will perform a 'hard refresh' and tell your browser to retrieve a new page from the server.
If that doesn't work, you need to delete your Temporary Internet Files.
If using IE, choose TOOLS -> INTERNET OPTIONS -> Temporary Internet Files (delete). And make sure to choose the option to delete your offline temporary files as well. Once that is done, check your SETTINGS under Temporary Internet Files, and make sure that your browser is set to automatically retrieve new pages from the site.
If this does not answer your question, choose another topic or click here to contact support.