Tablespace map takes an unreasonable long time to show up and the Space Manager client GUI just hangs.
Download the latest version of Space Manager with LiveReorg from SupportLink - http://support.quest.com. Contact Quest Support if issue persists.
Do not use Tablespace map to determine the reorg need. Instead, go to Reports | Exception Report | choose "Objects Needing Reorganization".
Waiting for fix in a future release of Space Manager with LiveReorg.
On Locally Managed Tablespace in Oracle 10g and above, it is important that the statistics in Oracle Data Dictionary is up-to-date. When performing a Tablespace Map, the Oracle Data Dictionary is queried, so it is important that the Oracle Data Dictionary is analyzed.