private void fixUserManagerMemoryLeak() {
        try {
            // invoke UserManager.get() via reflection
            final Method m = UserManager.class.getMethod("get", Context.class);
            m.setAccessible(true);
            m.invoke(null, this);
        } catch (final Throwable e) {
            if (BuildConfig.DEBUG) {
                throw new IllegalStateException("Cannot fix UserManager memory leak", e);
            }
        }
    }
<a href="https://code.google.com/p/android/issues/detail?id=173789">...</a>
introduced with JELLY_BEAN_MR2 / fixed in October 2016
main/src/main/java/cgeo/geocaching/CgeoApplication.java