There is a bug in the version of wine supplied with Ubuntu Hardy. This causes the version of Internet Explorer installed with ies4linux to hang when loading sites via HTTPS. I use IE for a few sites written back in the dark ages, and for testing a site’s layout before publication.
Aside: tolaris.com’s neat new automagically expanding header images look terrible in IE 5/6. I have no intention of fixing this. If you’re reading my site, you probably know better than to use IE for everyday browsing.