no... really... it makes you less efficient...
In an independent research, Pfeiffer Consulting conducted the research based on an independently financed series of benchmarks that establish how Vista impacts User Interface Friction (UIF) and user efficiency.
It found Vista to be even worse than Windows XP (SP2) -- and of course Mac OS X.
Windows Vista Hinders Creative Users’ Efficiency Even More than Windows XP Did [via /.]
P.S. Results from research and studies don't lie eh? ;)