On my desktop, which is my primary computer, I mainly use Internet Explorer 7.0 (IE7) and Opera. However, I also have Firefox and Safari installed on that machine.
On my laptop, I use IE7 and Firefox. No other browsers are currently installed on that machine.
At school, I use a portable version of Firefox that runs directly from my USB drive. The (Windows) computers at school have IE6 installed. However, I choose to use portable Firefox instead for security reasons.
