Is IE dead?

Internet Explorer Error Message

I encountered this error message last night. Are they telling me that Internet Explorer (IE) is so far behind the times that I should stop using it? I have found problems using IE with some other sites.
Has IE fallen so far out of favour? I tried Chrome when it first came out and dumped it as it was buggy and slow. Should I dump IE and go back to Chrome, or use Firefox?

Well according to this graph, the answer is yes.


Source: http://en.wikipedia.org/w/index.php?title=File:Usage_share_of_web_browsers_(Source_StatCounter).svg&page=1