I have the same issues but on Windows Server 2008 R2 SP1. Internal error: Revprop caching for 'E:/csvn/data/repositories/repo/db' disabled because SHM infrastructure for revprop caching failed to initialize. Internal error: -Can't open file 'E:\\csvn\\data\\repositories\\repo\\db\\rev-prop-atomics.mutex': Access is denied.
I have checked access permissions on folder mentioned above, but the SYSTEM account have full access permissions on the whole directory structure of the repository. Have anybody know how to fix this issues?