I agree with Dave L. KPMG did that about 20 some years ago when they merged and rebranded from Peat Marwick; Four rectangles, clean typeface and clean colours, very Accountant-ie and crisp. It's actually worked quite well for them I think. Not so wild about the Microsoft logo myself, only because I don't like the colours and never have, but that's a personal pref, and as a rebrand I think it's pretty ok as it moves them away from that swooshy stuff they had previously, looks cleaner but is definitely still connected with their overall visual identity.