cn=config crashes on modification

Hi, I am experiencing weird errors with 2.4.5beta, i.e. modifying config backand for example I get

=> access_allowed: read access to "olcDatabase={1}hdb,cn=config" "olcDbDNcacheSize" requested <= root access granted => access_allowed: read access granted by manage(=mwrscxd) <= acl_access_allowed: granted to database root filter_free: unknown filter type=1168 *** glibc detected *** double free or corruption (out): 0x085c46c0 *** Abgebrochen

Is this a bug. a corrupted cn=config database or is glibc-2.3.4-23.4 the reason?

-Dieter