It will, however, involve a simple registration process and a password - although you will have the choice between using the current portfolio or the Power Portfolio. It also means that cookies will not be used for the portfolio although they will still be used for the mini portfolio you can choose to view on your home page. But I haven't deleted my cookies yet part of my portfolio has disappeared. If you use Internet Explorer as your browser the cookies are stored over several folders and deleting just one of these can corrupt the portfolio. It means that when the computer memory runs low, the software will choose what it considers to be the least relevant files on your hard disc and delete them.
Cookies are often the first to go.
This Is Money has no control over this. If your portfolio disappears you can reinstate it by importing the cookies in the same way as you exported them, but click on Import instead of Export. If you use Netscape - You need to manually copy the cookies.txt file. If you do back-up your cookies and then change your portfolio, remember to resave the updated cookies. I've done all that, but still it's not working.