The part that is wrapping around onto 3 lines is 'Welcome to Config Mgt, Dte / Fte & Common Components'.
see http://archive.webstandards.org/css/winie/
with your code and firefox everything is fine, while IE is doing 3 line wrapping. try put instead of spaces.
Welcome to Config Mgt, Dte / Fte & Common Components
It's a little bit boring, I know, but I don't know a better solution (though I'm interested in finding one)
Alexis