site is down with exit 1 code

I have a site running on:

pveversion -v
pve-manager: 1.7-10 (pve-manager/1.7/5323)
running kernel: 2.6.35-1-pve
proxmox-ve-2.6.35: 1.6-7
pve-kernel-2.6.32-4-pve: 2.6.32-28
pve-kernel-2.6.35-1-pve: 2.6.35-7
qemu-server: 1.1-25
pve-firmware: 1.0-9
libpve-storage-perl: 1.0-16
vncterm: 0.9-2
vzctl: 3.0.24-1pve4
vzdump: 1.2-9
vzprocps: 2.0.11-1dso2
vzquota: 3.0.11-1
pve-qemu-kvm: 0.13.0-2
ksm-control-daemon: 1.0-4

It stopped overnight. I can not start it. Here is the error message:

VM 103 start failed: command '/usr/bin/kvm -monitor unix:/var/run/qemu-server/103.mon,server,nowait -vnc unix:/var/run/qemu-server/103.vnc,password -pidfile /var/run/qemu-server/103.pid -daemonize -usbdevice tablet -name LLGlass -smp sockets=1,cores=1 -nodefaults -boot menu=on -vga cirrus -tdf -k en-us -drive file=/var/lib/vz/images/103/vm-103-disk-1.raw,if=ide,index=0,boot=on -drive if=ide,index=2,media=cdrom -m 2000 -netdev type=tap,id=vlan0d0,ifname=vmtab103i0d0,script=/var/lib/qemu-server/bridge-vlan,vhost=on -device virtio-net-pci,mac=6A:05:05:CE:32:82,netdev=vlan0d0' failed with exit code 1
Mar 15 09:15:13 glenda pvedaemon[23039]: VM 103 start failed -
Mar 15 09:15:48 glenda proxwww[23056]: Starting new child 23056

I could really use some help on what caused this.

thanks