try opening internet explorer and click:
tools/internet options/security. drag the slider to medium and apply/ok.
same again and click the privacy tab:
click advanced.tick "allow first party cookies" and block third party cookies"
tick "always allow session cookies" apply and ok.
once you enter your passwords again for individual sites,they now should be saved untill you clear your cookies again (click the delete cookies button under the general tab to do this)