Well, it's probably something to do with the style that you had on. From a bit of research, StyleXP can operate in two different ways:

- The first is just to change the appearance of window titlebars, buttons, taskbar, startmenu, etc. by decompiling the default Windows theme file, altering it, and recompiling it. That kind of means that you're using a normal Windows style and StyleXP doesn't need to be running to keep the style on.
- The second requires StyleXP to actually be running, and this would be if you had the option to rotate bits of the theme about. For example, you can have a bunch of wallpapers that change like a slideshow, or themes that change to another every few minutes.

To be perfectly honest, after researching the program, I can't see any reason that it would produce a bar like that since it's not in the normal functionality of the program. I'm actually wondering if it was just the restart that fixed it; had you tried it before? If you like you can re-enable StyleXP and see if it brings the bar back. It won't break anything and you can always re-disable it, so it can't hurt to try, I guess.

EDIT: I just noticed that the headings "Other places", "Details" and "Folder Tasks" are the same as what appear on a normal folder in XP, only they look different thanks to StyleXP. What appears to have happened is a regular folder seems to have giant-sized itself and planted itself upon your desktop. Do you normally have a white background like that? You wouldn't be able to move it very easily and it could easily be a bug in StyleXP causing it. If you enable it again and it happens, click on the white background and press <b>Alt+F4</b>. This will close the folder, if indeed that's what it is, and you should be able to continue using StyleXP.