I would use the latest nokismet (nokismet-0.0.1.deb)
and try the diablo firmware. If that doesn't work go one step back on the firmware.
Could you possibly PM me the kismet_2008-05-R1_armel.deb, as I am still using the 2007 one (which functions with Diablo)
I can't seem to get nokismet 1a to install but if you could also PM me the newest nokismet thaat would be great.
Thanx