Looking at your config it looks like you are setting up x.x.x.118 to be your PAT address, but it appears that address is on the router:

Public network: x.x.x.112 255.255.255.248
Public router ip default gateway: x.x.x.118

You need to have a separate public IP address on the PIX for your PAT address. You should use another address in your range. At the PIX command prompt, type "show xlate" and this will show your PAT translations.

The usable addresses should be 113 through 116 unless you already have them in use on public servers.

You may also need an inside route to send the traffic back to the internal lan.

Just a comment, your entry "nat (inside) 1 0.0.0.0 0.0.0.0 0 0" should be limited to your private ip range, but this should not affect the issue you are having now.