Proof for previous poster:
Comments for Xp-tan.swf
Well not exactly, the links on comment #6 don't work anymore. Though what aceman said is probably true. Though I kinda laughed when he said it was a memory hog.
The character in the movie seems to be XP-Tan, who is an OS-Tan wich seems to be a female anime character that represents a particular OS.
OS-tan - Wikipedia, the free encyclopedia
I can't see if this has actually been made, since I found a copy of this video from as far back as april '07.