Occasional application freezes when using Spring loaded

""http-bio-8080"-exec-1" daemon prio=5 tid=7fcd79fdb800 nid=0x10de2c000 runnable [10de25000]
   java.lang.Thread.State: RUNNABLE
	at java.util.WeakHashMap.get(WeakHashMap.java:355)
	at com.springsource.loaded.ri.ReflectiveInterceptor.getRType(ReflectiveInterceptor.java:811)
	at com.springsource.loaded.ri.ReflectiveInterceptor.jlClassGetModifiers(ReflectiveInterceptor.java:721)
	at org.codehaus.groovy.reflection.CachedClass.<init>(CachedClass.java:224)
	at org.codehaus.groovy.reflection.stdclasses.CachedClosureClass.<init>(CachedClosureClass.java:27)
	at org.codehaus.groovy.reflection.ClassInfo.createCachedClass(ClassInfo.java:259)
	at org.codehaus.groovy.reflection.ClassInfo.access$400(ClassInfo.java:36)
	at org.codehaus.groovy.reflection.ClassInfo$LazyCachedClassRef.initValue(ClassInfo.java:425)
	at org.codehaus.groovy.reflection.ClassInfo$LazyCachedClassRef.initValue(ClassInfo.java:416)
	at org.codehaus.groovy.util.LazyReference.getLocked(LazyReference.java:46)
	at org.codehaus.groovy.util.LazyReference.get(LazyReference.java:33)
	at org.codehaus.groovy.reflection.ClassInfo.getCachedClass(ClassInfo.java:89)
	at org.codehaus.groovy.reflection.ReflectionCache.getCachedClass(ReflectionCache.java:107)
	at groovy.lang.MetaClassImpl.<init>(MetaClassImpl.java:166)
	at groovy.lang.MetaClassImpl.<init>(MetaClassImpl.java:190)
	at groovy.lang.ExpandoMetaClass.<init>(ExpandoMetaClass.java:301)
	at groovy.lang.ExpandoMetaClass.<init>(ExpandoMetaClass.java:344)
	at groo