cannot delete browserui.dll

This is really interesting, after a system update of XP SP3, there are 2 strange hidden folders in D drive.

I tried to delete them, but they just cannot be deleted.
system restart, explorer shutdown, all no avails.

Finally, I check the permissions of these 2 folders.

Even group like administrators have no control of them,

so I gave admin full control of them, shift+delete, they are all gone!