Hi Elfi,
Yes, SWT's libraries are now compiled as universal binaries.
You seem to be hitting a bug in swt, but it's difficult to know much about
it based on what you've said so far. It would be ideal if you could find a
pattern of steps that make the crash reproducable for you, then log a bug
with SWT ( https://bugs.eclipse.org/bugs/enter_bug.cgi?product=Platform )
that describes the steps and attach any additional code that's needed to
reproduce it. This is sometimes easier said than done though, so if you
don't succeed with this then you can still log a report, include
the -Xcheck:jni info, and it may be possible for someone to debug it with
you remotely.
Grant