Some BIG numbers there. I just came accross this bit of info about what a simple hashing procedure would look like here and it goes like...

1.Request a new Getwork from a given pool/bitcoind with specified credentials
2.For nonce=0;nonce<0xFFFFFFFF;nonce++
   • Set Getwork Data nonce
   • SHA-256 hash the Getwork Data (block header)
   • Check if hash result is smaller than Getwork Target, if so, submit a share
   • If more than 1 second passed since you received Getwork, stop the loop
3.GOTO: 1


Why is he saying "If more than 1 second passed since you received Getwork, stop the loop?"