Hi,

we've been experiencing some SecurityExceptions caused by GAE's
Security Manager.
The strange thing is that they don't occur every time. Apparently
we're not the only ones:

1. Siena Project: 
https://groups.google.com/group/siena-discuss/browse_thread/thread/3882b18e14de8776
2. JAXB: http://code.google.com/p/googleappengine/issues/detail?id=1267#c11
3. JRuby: http://jira.codehaus.org/browse/JRUBY-4246
And many other stack traces are available, just googling for
'setAccessible' + GAE or AppEngine

So, has anyone investigated or is there an explanation why these
exceptions occur or why they don't occur every time?
In the docs, http://code.google.com/appengine/docs/java/runtime.html,
I can read:
"An application cannot reflect against any other classes not
belonging
to itself, and it can not use the setAccessible() method to
circumvent
these restrictions."
Is a jar we bundle with the application not considered part of the
application?

Thanks,
Emanuele

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