Stefan, I've noticed another severe issue in named atomic infrastructure used by revprop caching code while reviewing r1611379 fix: svn_atomic_namespace__create() doesn't release file lock and process-wide mutex (!) on error in libsvn_subr\named_atomic.c:446.
Which is basically mean that server will be deadlocked if *any* of named atomic shared file contains some invalid data. -- Ivan Zhakov CTO | VisualSVN | http://www.visualsvn.com