^ Yeah, I agree your own server logs are the best resources. Most of my client sites and affiliate sites show 50% or higher on IE users, and my more specialized 'techy' sites have a more even distribution of 25 / 25 / 25 / 25 FF, IE, Safari/Chrome, Other.
And FF and IE overall hold just about the same market share, IE6 was the most popular version of Microsoft's browser as of the end of 2009. I should have included more resources on my post, I was just happy to see IE6 fall from the spot.