Just downloaded Unvanquished and noticed that when it started up, Windows (I use 7 x64) pops up its firewall notice saying that it needs permission, blah, blah. However, UV has captured the mouse, so it's not possible to click Allow. I just hit Alt+A and that works, but not everyone knows that. Not sure if this is even something worth fixing, but thought I'd mention it.
Also, perhaps a readme with the release... wasn't sure whether to launch the .bat file or the .exe, so I launched the .exe and it appears to be working fine so far.