These 2.4.21.0 packages are now available for download:

* SunOS 5.10 on x86 and x86_64

* SunOS 5.10 on SPARC (32- and 64- bit packages)

Additional information concerning the 2.4.21.0 release is here:

Symas OpenLDAP 2.4.21.0 Released for RHEL4/RHEL5/SLES9/SLES10 on i386 and x86_64