If you find yourself having to repeatedly login it means that cookies are not enabled on your machine. Since we use cookies for our security we have to keep asking you who you are.

If you are worried about cookies being written to your hard disk you can just enable per session cookies. In MS Internet Explorer select tools | Internet Options, go to the security menu and click customise then enable per session cookies and click OK. If this option is greyed out it means it has been disabled by your system administrator and you will have to discuss this with them.

If you enable disk based cookies you should never have to login again - we'll read the cookie and check your identity that way.