[SSSD-users] sssd many ccache-files

Hi sssd users,

sssd creates many ccache-files under /var/lib/sss/db/. They become so much, that the maximum number of inodes (default: 32768) for the partition is reached. This results in several other problems (failed logins, processes can't create sockets, etc).
Why are so many files created? Is there a way to limit the maximum number of created files?
Right now I'm running a daily Cronjob that deletes the sssd-cache (sss_cache -E).

I'm running RHEL6.6 and sssd 1.11.6 with AD as backend.
Linux 2.6.32-504.el6.x86_64 #1 SMP Tue Sep 16 01:56:35 EDT 2014 x86_64 x86_64 x86_64 GNU/Linux

Thanks
Sebastian