I use Firefox, generally. Here’s one place where IE wins – auto-detection of network settings.
When at home, both IE and Firefox connect through my wireless network because I don’t have a proxy server. At work, we use a proxy and IE auto-detection works; Firefox auto-detection doesn’t pick it up and I have to mess about with the settings every day.
I suppose my response now should be to try and make Firefox better. That’s the point, isn’t it.