This is not a question, per se - I suppose it's more of an observation.
We recently upgraded LSF on one of our clusters to v9.0.1, and quickly discovered that Queue can't submit jobs. The reaction was rather violent - the entire JVM crashed, and the stack trace showed it dying in lsb_submit(). We downgraded LSF to v8.3.0, and everything is working fine (so far).
I know Queue is compiled against the LSF v7.0.6 API, it would appear that it's not binary-compatible with LSF 9.x.
Hope this helps others in the future...