There are two config file that I'm using. This first one ends up with the "last received nonce 2 seconds ago" lines over and over again and never mines. This is the config file that comes with this modified version of cgminer.
"expiry" : "120",
"hotplug" : "5",
"log" : "5",
"no-pool-disable" : true,
"queue" : "1",
"scan-time" : "60",
"hexminerb-voltage" : "900",
"hexminerb-options" : "16:540",
"hexmineru-frequency" : "54",
"hexminerc-voltage" : "900",
"hexminerc-options" : "16:1000",
"hexminer3-chip-mask" : "255",
"hexminer3-voltage" : "750",
"hexminer3-options" : "16:7000",
"hexminer8-set-diff-to-one" : "0",
"hexminer8-chip-mask" : "255",
"hexminer8-voltage" : "930",
"hexminer8-options" : "8:240",
"hexminerbe200-asic-diff" : "1",
"hexminerbe200-skip-hw-res" : "1",
"hexminerbe200-pic-roll" : "90",
"hexminerbe200-hw-err-res" : "5",
"hexminerbe200-nonce-timeout-secs" : "2",
"hexminerbe200-chip-mask" : "15",
"hexminerbe200-voltage" : "860",
"hexminerbe200-options" : ":300",
"hexminerm-pic-roll" : "90",
"hexminerm-hw-err-res" : "5",
"hexminerm-nonce-timeout-secs" : "2",
"hexminerm-chip-mask" : "15",
"hexminerm-voltage" : "805",
"hexminerm-options" : "4:1016",
"kernel-path" : "/usr/local/bin"
This next config file is created by the same version of cgminer but will only mine for about 10 minutes. It will eventually crap out and say the miner is dead. By created I mean I delete the cgminer.conf file, start cgminer, enter my pool and user info and have cgminer write the config file.
"api-description" : "cgminer 4.5.0",
"api-mcast-addr" : "224.0.0.75",
"api-mcast-code" : "FTW",
"api-mcast-des" : "",
"api-mcast-port" : "4028",
"api-port" : "4028",
"expiry" : "120",
"hotplug" : "5",
"hexminerb-voltage" : "840",
"hexminerc-voltage" : "1100",
"hexminer8-voltage" : "800",
"hexminer8-chip-mask" : "255",
"hexminer8-set-diff-to-one" : "1",
"hexminerm-voltage" : "820",
"hexminerm-pic-roll" : "60",
"hexminerm-chip-mask" : "255",
"hexminerm-hw-err-res" : "255",
"hexminerm-nonce-timeout-secs" : "255",
"hexminerbe200-voltage" : "820",
"hexminerbe200-pic-roll" : "60",
"hexminerbe200-asic-diff" : "0",
"hexminerbe200-chip-mask" : "65535",
"hexminerbe200-skip-hw-res" : "1",
"hexminerbe200-hw-err-res" : "10",
"hexminerbe200-nonce-timeout-secs" : "10",
"hexminer3-voltage" : "850",
"hexminer3-chip-mask" : "255",
"log" : "5",
"queue" : "60",
"scan-time" : "60",
"shares" : "0"
}