331213 Bugfixing my PHP Script

I have a site to manage free parking lots in germany. Unfortunatelly there is a problem with the scripts (the site is templated based and was programmed by a programmer i also fount here): Backend: since today i can no more edit entries in my database through my admin panel. However, editing them with phpMyAdmin works. Because i didn't change the admin files i have really no idea what happend. Maybe there are too many entries in my database (about 1500) that the script is overloaded ? It would be you job to find out and fix. Of course you will getz ftp/mysql access and access to the admin panel so that you can test the site...