I get that on every page I have the file session.php included. It's required on pretty much everypage on my site. It just randomly happened today. I made no changes or did anything to cause this at all that I know of. I am using a free web host that includes the mysql databases... is it something to do with the host?
Warning: session_start() [function.session-start]: open(/tmp/sess_8a75e9c811f33b935fddaffe3d371230, O_RDWR) failed: Read-only file system (30) in /home/a2986016/public_html/session.php on line 46