The Event Admin bundle uses content from Oswego (EDU.oswego.cs.dl.util.concurrent) that is functional also available in the standard java library (java.util.concurrent). I have made a version without the Oswego stuff based on the actual trunk (rev 1324766) using java.util.concurrent. Perhaps it would be nice to use it in future 'official' versions ? It would also eliminate the need to put the extra-license from Oswego discussed earlier (http://osdir.com/ml/dev-felix-apache/2010-02/msg00401.html)
Contact me if you're interested, M.Donat