After having a problem accessing secure sites with IE5.5 started after using it without problem for a good year or so, I resolved it by updating to IE6. Since then I get an error when I try to read some HTML messages: "Your current security settings prohibit running ActiveX controls on this page. As a result this page may not display correctly." And, in fact, some images do not display unless I click the forward button.
I have tried different ActiveX settings but nothing so far has resolved this problem.