The links between the switches should be set to TRUNK mode. They are set to ACCESS although they are not on the same VLAN. This prevented STP from working properly to block switching loops. So ARP (and other) broadcasts were forwarded over and over and the result is a broadcast storm choking the switches with traffic.
I also set all switches to the same VTP domain (DOM1). One of the switches better be set to VTP server mode while all the others need to be on VTP client mode to get VLAN information from the server switch. I also set them to VTP version 2. Here is the working file.
www.2shared.com/file/XkY8_iVp/2nd-PROJECT-A-_fixed.html
By the way, you need 2 more sub-interfaces on the right side router to cover VLAN 13 and VLAN 1.
