If you suspect that it's a Java problem, check out these Java Tester sites.
http://www.bodo.com/javame.htm
http://www.javatester.org/
Here's a SSL testing site.
http://verisign.netscape.com/advisor/check.html
You Cannot Open New Internet Explorer Window or Nothing Happens After You Click a Link
http://support.microsoft.com/?kbid=281679
Internet Explorer Cannot Connect to Secure Web Sites
http://www.windows-help.net/WindowsXP/troub-10.html