It's a documented bug in 5.x browsers, tho it dosn't seem to appear systematically. http://www.modssl.org/docs/2.6/ssl_faq.html#io-ie Quoting Rick Romero <rick@valeoinc.com>: > > > Chris, > > I was curious to see the error message, so I fired up IE > 5.00.3103.1000 (SP1) on Win2k, and went to webmail.tulane.edu. >