[syslog-ng] Syslog-ng error message

I'm relatively new to syslog-ng. I've just compiled and installed it on a Sun 4100 (Opteron) running Solaris 10. Regardless of whether I activate it using svc or run it manually, the first time a log message shows up, I get the following error message: May 19 14:16:50 galaxy04 syslog-ng[1807]: Insufficient buffer space for retrieving STREAMS log message; res='ffffffff' I haven't got a clue where to look to resolve this. I've done some initial scans on the internet for possible clues, but have come up blank. Any suggestions? Thanks.