I use Windows 7 on a Lenovo laptop. Actually my system setup is a bit convoluted with some evil corporate spyware (besides Windows itself that is), but never mind that.
When I enter a wrong password, either when I'm connected to our network or when disconnected, it takes quite a lot of time for Windows to report the password is wrong. And by 'a long time' I mean as much as 20-30 seconds sometimes. Now, even, say, 5 is a lot, I would say - so whatever I can do to reduce this, I want to do (including any artificial security-related delay for incorrect passwords).