[syslog-ng]What does this message mean?

[syslog-ng@lists.balabit.hu]

Hi List Folks,

Anyone bother to explain to me what this message means?

Aug 28 08:44:50 src@hostname syslog-ng[191]: pkt_buffer::do_flush(): Error
flushing data

OS: Solaris 8
syslog-ng: 1.6.0rc3

Pls let me know if you need more info.

Rgds
Gary