PHP Fatal error: ob_start()

I was just looking trough my server logs an i see this below:

[30-Aug-2011 20:20:52] PHP Fatal error: ob_start() [ref.outcontrol]: Cannot use output buffering in output buffering display handlers in /home/blogline/public_html/wp-content/plugins/sharebox/lib/class_wdsb_public_pages.php on line 93

Just thought i would post it.

Thank you Kindly
Mark de Scande
http://www.bloglines.co.za