The above conf changes had no effect.

I added a cron job to do a 'ps -fl' and 'uptime' every minute. I seem to have a correlation with a large number of sys_flock calls being made and a larger load and these errors occuring.

Does this ring any bells for you as to being a UBB issue?

000 R nobody 13153 12227 29 70 0 - 10800 - 00:02 ? 00:00:05
perl /home/ibsgroup/public_html/cgi-local/ubbcgi/ultimatebb.cgi
000 S nobody 13154 13115 5 60 0 - 1267 flock_ 00:02 ? 00:00:00
perl /home/ibsgroup/public_html/cgi-local/ubbcgi/ultimatebb.cgi
000 S nobody 13155 12230 10 63 0 - 1267 flock_ 00:02 ? 00:00:00
perl /home/ibsgroup/public_html/cgi-local/ubbcgi/ultimatebb.cgi
000 S nobody 13156 13117 9 63 0 - 1267 flock_ 00:02 ? 00:00:00
perl /home/ibsgroup/public_html/cgi-local/ubbcgi/ultimatebb.cgi
000 S nobody 13157 12215 12 68 0 - 1268 flock_ 00:02 ? 00:00:00
perl /home/ibsgroup/public_html/cgi-local/ubbcgi/ultimatebb.cgi
000 S nobody 13158 13116 16 68 0 - 1267 flock_ 00:02 ? 00:00:00
perl /home/ibsgroup/public_html/cgi-local/ubbcgi/ultimatebb.cgi
000 R nobody 13159 13119 21 71 0 - 1111 - 00:03 ? 00:00:00
perl /home/ibsgroup/public_html/cgi-local/ubbcgi/ultimatebb.cgi