I would use IE for my main browser if it didn't log me off certain sites while browsing. That's beyond irritating.
No.. That is the default. Delete the cookies for the site, close all IE Windows and restart IE and see if it continues.
I'm the same, but opposite. I use Safari primarily and Firefox for any secondary uses I may have. Before I had a Mac it was Firefox all the way.
I can't really pick a specific browser to be quite honest. I have four installed on my computer, all in Vista's quick launch area. IE, Firefox, Chrome and Safari. I use IE for checking my email and IE specific sites. I use Firefox for my internet purchases and banking as well as for IRC through Chatzilla. I use Chrome and Safari for random web browsing. I'm posting this on Safari for instance but I have Firefox running in the background...