Problem with permissions in RHEL6

[Parasit Hendersson]

Hi,
I try migrate from RHEL5 (389-ds-base-1.2.10.14-1.el5) to RHEL6 
(389-ds-base-1.2.11.15-11.el6.x86_64).

Everything looks good, installation from rpm, first start, etc. but 
server instance won't start after restart. Problem (probably) is in 
rights to directory /lib/dirsrv/
Fragment of log:
[16/Sep/2013:16:17:47 +0200] - 389-Directory/1.2.11.15 B2013.021.196 
starting up
[16/Sep/2013:16:17:47 +0200] - slapd started.  Listening on All 
Interfaces port 389 for LDAP requests
[16/Sep/2013:16:17:48 +0200] - mkdir_p /lib/dirsrv/slapd-master2: error 
-5966 (Access Denied.)

But rights looks good:
drwxr-xr-x.  2 nobody nobody 4096 Sep 16 14:56 dirsrv

When i create directory and some files manually (still with owner 
"nobody") got message:

"WARNING---no write permission to file 
/lib/dirsrv/slapd-master2/db/Project/DBVERSION"

But:
-rw-rw-rw-. 1 nobody nobody 0 Sep 16 16:40 DBVERSION

Please help, where is problem?

Best Regards
Parasit Hendersson