Sometimes UnnnecessaryLoadingTest is failing:

http://hudson.infinispan.org/hudson/job/Infinispan-master-JDK6-tcp/org.infinispan$infinispan-core/236/testReport/org.infinispan.loaders/UnnnecessaryLoadingTest/org_infinispan_loaders_UnnnecessaryLoadingTest_testSkipCacheLoadFlagUsage/

It would appear as if the store is being cleared while the test is running which would make the previous value not exist. In its current form, the test methods should be executed sequentially to make sure they work as expected.