BCMRD 2.4.3 Agents missing in database history.mdb

[BolivianFast]

The logins Id's are missing in database, for this reason their names not appear in the reports with the BCMS Client.
The BCMS Server (2.4.3) is installed a machine with Windows XP SP2

My software configuration is this:

Operating system: Linux 2.6.18-128.AV07PAE i686 i686
Built: Aug 19 04:58 2009

Contains: 02.1.016.4
CM Reports as: R015x.02.1.016.4
CM Release String: S8300-015-02.1.016.4

UPDATES:
Update ID Status Type Update description
------------------------------- ------------ ------- ---------------------------
02.1.016.4-18111 unpacked cold patch 18111 for 02.1.016.4
02.1.016.4-18250 activated cold patch 18250 for 02.1.016.4


SES Update ID Status Type Update description
------------------------------- ------------ ------- ---------------------------

Platform/Security ID Status Type Update description
------------------------------- ------------ ------- ---------------------------


CM Translation Saved: 2010-07-02 12:29:50

CM License Installed: 2010-06-29 10:07:59

Messaging: --N5.2.1-13.0-------------

CM Memory Config: Standard

Please help me with any tips; thanks.