I'm running german Windows XP Professional with Service Pack 3. Nothing "odd" about it I think. At least I dind't use nLite or something like this to remove contents and services from my installation CD ...
And no, I can't get any tooltips to show up in ImgBurn - no matter how long a leave the mouse on a button. In all other applications (Windows Media Player, WinRAR, VLC, Foobar2000, Firefox - just to name a few), tooltips are shown properly.