100% CPU consumption with 3.6.2-4 kernel and Java

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http://forums.fedoraforum.org – After updating my kernel to 3.6.2-4 a Java process frequently consumes 100% sys time of all CPU cores for 30 seconds to several minutes. Everything works normally in between. I've tried using different JVM's but that makes no difference. Reverting back to my previous kernel 3.5.6-1 makes the problem go away. Has anyone else seen this? (HowTos)