I've seen multiple threads about this issue but it seems that nobody is following through with support to give the information you guys need to help fix the problem. Here's what I can tell you:
In my error log I can see multiple instances of 200+ lines of the same error coming from the same site, here's an example:
PHP Warning: mysql_real_escape_string() expects parameter 1 to be string, object given in /var/www/htdocs/wp/wp-includes/wp-db.php on line 789, referer: http://preview.vortala.com/pp0550/wp-admin/admin.php?page=autoblog_admin
sometimes the error comes right from the wp-db.php file like this:
PHP Warning: mysql_real_escape_string() expects parameter 1 to be string, object given in /var/www/htdocs/wp/wp-includes/wp-db.php on line 789
I have something set up to run my WP crons for me, and it's got a timeout of 30 seconds to make sure nothing hangs too long. The above error goes on for over 1000 lines before hitting the 30 second limit and cutting off.
I have the latest version of Autoblog and I'm on WP 3.4.2 (haven't moved to 3.5 yet). I have a large ~2000 site network and the feeds don't run automatically as they should (start showing "next check: 2 days ago"). I think this long list of warnings may be the problem or part of the problem.
Any ideas with the information I have given? Is there any other information you need that I can give you?