Firefox is starting to make some inroads into Internet Explorer's dominance of the browser market. Found a couple of articles on Slashdot relating to this. The first is about IBM adopting Firefox internally and the second is about IE's usage share dropping below 90% for the first time and Firefox doubling it's share. It still got a long way to go though – it's only at 6.8%
Link: IBM Backs Firefox In-house
Link: Internet Explorer's Share Dips Below 90%