Note that not every
browser/
OS is fully capable of displaying the
quake-on-its-side
Euro symbol properly in all
fonts. You might need to make an update for that. This writeup is being written in a
browser that shows the symbol correctly in the title bar but not in the
sans serif font used for the node header, for instance.
Windows Update is supposed to solve this problem for the most common used fonts, but chances are you have many others which still lack the symbol. No perfect solution as of now.
Same goes for Linux -- some of their fonts have the Euro, some doesn't.