https://bitcointalksearch.org/topic/m.5581480
The cause of the regression in performance was found and this should outperform any previous cgminer releases.
Thanks, CK.
BTC Guild reports roughly the same hash rate as shown below (442 GH/s).
OS: Ubuntu 12.04 LTS
HW: 1.1
FW: 0.4
cgminer version 4.1.0 - Started: [2014-03-08 13:32:20]
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(5s):382.4G (avg):442.5Gh/s | A:674304 R:2304 HW:1111 WU:6181.1/m
ST: 24 SS: 1 NB: 14 LW: 726112 GF: 0 RF: 0
Connected to stratum-lb-usa48.btcguild.com diff 256 with stratum as user
Block: 73a7d862... Diff:3.81G Started: [15:19:23] Best share: 411K
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[U]SB device management [P]ool management [S]ettings [D]isplay options [Q]uit
0: HFB 0: 604MHz 82C 5% 0.79V | 402.0G/442.8Gh/s | A:674816 R:2304 HW:1112 WU: 6185.8/m
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The BabyJet seems more stable when it isn't connected to the Eligius pool--I haven't had a single HotPlug event in the first two hours of mining in BTC Guild.