Norton utilities - problems after running it

I  recently purchased Norton Utilities and ran it on my older PC as it claimed to make it 'like new'. Unfortunately it seems to have wiped all my logins and passwords and many of the sites I visit regularly, such as my ISP home page; Ebay and BBC News appear different - with the usual layout all broken up; 'simplified' and difficult to read. Drop down menus on sites I use regularly, such as Ebay, have also disappeared.

All in all I'm very disappointed and annoyed and don't want to run the software on any other machines in the house until I know this can be reversed. Alternatively I want my money back as it might have made my computer better on the inside, but on the pages I view regularly, it is a very sickly patient indeed!

Can anyone help/offer advice. Tried to call Norton directly but can't find a number on their site.

Thanks.