Server freezed at startup just after LibreOffice process start

Server doesn't respond after the following logs:
May 18, 2011 4:50:24 PM org.artofsolving.jodconverter.util.PlatformUtils searchExistingfile
INFO: Jod will be using C:\Program Files (x86)\LibreOffice 3
May 18, 2011 4:50:24 PM org.artofsolving.jodconverter.office.ProcessPoolOfficeManager <init>
INFO: ProcessManager implementation is WindowsProcessManager
16:50:25,222 WARN [OfficeProcess] profile dir 'c:\hudson\workspace\FT-nuxeo-5.4-selenium-dm-tomcat-windows\label\hudson-7\nuxeo-distribution-dm\ftest\selenium\target\tomcat\tmp\.jodconverter_socket_host-127.0.0.1_port-2003' already exists; deleting
May 18, 2011 4:50:25 PM org.artofsolving.jodconverter.office.OfficeProcess prepareInstanceProfileDir
WARNING: profile dir 'c:\hudson\workspace\FT-nuxeo-5.4-selenium-dm-tomcat-windows\label\hudson-7\nuxeo-distribution-dm\ftest\selenium\target\tomcat\tmp\.jodconverter_socket_host-127.0.0.1_port-2003' already exists; deleting
May 18, 2011 4:50:25 PM org.artofsolving.jodconverter.office.OfficeProcess start
INFO: starting process with acceptString 'socket,host=127.0.0.1,port=2003,tcpNoDelay=1' and profileDir 'c:\hudson\workspace\FT-nuxeo-5.4-selenium-dm-tomcat-windows\label\hudson-7\nuxeo-distribution-dm\ftest\selenium\target\tomcat\tmp\.jodconverter_socket_host-127.0.0.1_port-2003'
May 18, 2011 4:50:25 PM org.artofsolving.jodconverter.office.OfficeProcess start
INFO: started process; pid = 1920