With 3d05c92042fee814f535c1374372f090c554975b I changed the "ignore" to "explicit". With nunit.exe (I use 2.6.2; in 2.5 there is a bug https://bugs.launchpad.net/nunitv2/+bug/841894) you can explicitly right-click and choose Run.

(with Resharper for example one can also explicitly run ignored tests)