The most intuitive way, for someone not used to anything, on any OS is to click on the name. I work with many people who are almost computer illiterate. Many people don't know "right-clicking" from clicking.
Select the file. Click on the name. Start typing.
This works in Windows - at least as far back as Windows 2000.
For myself, who has done 99% of development for Windows, but uses Mac for everything else (home business and personal), it's nice to be able to rename items by clicking. But, when I'm in the Windows world, I get in "right-click" mode, so probably use a mix of that and clicking on name. Another poster said this too: Why would you expect a different operating system to behave exactly the same way as another? Windows has "adopted" more Mac-like features than the other way around. You do know originally (probably until version 3, but don't remember exactly), control-v,x,c weren't available in Windows (at least system wide)? They came from command-v,x,c on the Mac. Prior to that, it was some combination of the page edit keys - or, keyboard navigation to menus (alt-f,e, etc.)
So it's more than a stretch to call the rename method(s) used in OS-X a "flaw".
