Prevent concurrent modification issue from applying multiple filters quickly

git-svn-id: http://svn.slightlymagic.net/forge/trunk@26909 269b9781-a132-4a9b-9d4e-f004f1b56b58
Version bump to 1.5.24.003

git-svn-id: http://svn.slightlymagic.net/forge/trunk@26910 269b9781-a132-4a9b-9d4e-f004f1b56b58