Matthias: the problem reported in this email thread should be different than
https://glassfish.dev.java.net/issues/show_bug.cgi?id=10660
The problem reported in this email thread seems to be related to the synchronization part of the cluster scenario (in v2) while issue 10660 seems to be related to scanning archive for annotations to find the corresponding archive handler (in v3).
We don't have cluster support in v3 yet and the part to scan annoations to find archive handler is only applicable to v3 also.
Did you get a chance to try with a later nightly build to to see if things improve?
[Message sent by forum member 'hzhang_jn' (hong.zhang_at_sun.com)]
http://forums.java.net/jive/thread.jspa?messageID=370346