Are there any downsides to installing WordPress on Windows versus Linux?

We’re planning on installing WordPress on Windows Server 2008 to be consistent with the rest of our servers and leverage administrative expertise.

The server will not be running anything else. Are there any gotcha’s to be had for WordPress on Windows versus Linux (outside of server licensing costs)?

I’ve installed WordPress on my virtual server running Windows Server 2008 R2. Installation was easy, no troubles. I installed PHP using Web Platform Installer. PHP 5.3 performs well on IIS7 and you can also use WP super cache to increase performance. There haven’t been any downsides for me so far 🙂