I was thinking of this thread on Saturday, Millie sleeps in our room at night anyway, sometimes on the bed if she fancies as she is allowed (although I'm not always impressed when I wake up in the morning and find she has sneaked up in between us and settled down with her head on my pillow!) but never sneaks up there during the day - when i go out she won't even go in the living room, she remains firmly positioned in the hall in front of the front door on sentry duty at all times (must point out to her at some point that sentries are supposed to stay awake though).
Anyway, Saturday afternoon I was cleaning the kitchen, and walked through downstairs to find my ciggies and noticed the dog wasn't where I thought she was...traced my steps back to the kitchen, no dog.
So I went upstairs and there she was fast asleep on my bed

So I'm convinced that its not a case of "who's been sleeping in my bed" but rather "who's been surfing the net on my computer and picking up tips from Champdogs...." :-D