Forum Need help with error message
 

Whenever someone has made a post and submits it, it redirects them to the following message:

Warning: rand() expects exactly 2 parameters, 1 given in [path]/includes/functions.php(3093) : eval()'d code on line 1

Warning: Cannot modify header information - headers already sent by (output started at [path]/includes/class_core.php:3277) in [path]/includes/functions.php on line 3103

The post still shows up, but it just started doing this after I placed two ads on my site. However, the ads were placed using the built in feature that is part of the vbulletin software.

Any ideas?