for Thunderbird Trunk (3.0*)/ Seamonkey Trunk (2.0*) (Gecko 1.9) on Windows (32-bit)
enigmail-trunk-tb-win32-trunk.xpi (build date: 2009-07-04, version: 0.96a.0+)

for Thunderbird Trunk (3.0*)/ Seamonkey Trunk(2.0*) (Gecko 1.9) on Linux (x86, 32-bit)
enigmail-trunk-tb-linux-trunk.xpi (build date: 2009-07-04, version: 0.96a.0+)