X11 or Scrypt? Do you set diff param in password?
X11. It doesn't matter if you set diff or not, it's the same result.
Even more, every diff value (except network) I have is (-)0.000...
Diff "d=0.01" is set in password.
sgminer 4.1.0-nicehash-2 - Started: [2014-05-14 13:12:42]
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(5s):784.9K (avg):737.4Kh/s | A:6 R:0 HW:0 WU:0.010/m
ST: 1 SS: 2 NB: 928 LW: 40958 GF: 4 RF: 0
Connected to Pool 0 (stratum) diff 0.000 as user 1xxx
Block: 56e97338... Diff:815 Started: [23:12:24] Best share: -0.000
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[P]ool management [G]PU management [S]ettings [D]isplay options [Q]uit
GPU 0: 68.0C 2087RPM | 772.5K/737.4Kh/s | R: 0.2% HW:0 WU:0.010/m I:15
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[23:12:37] Stratum from Pool 0 requested work restart
[23:12:40] Accepted 35e17290 Diff 0.000/0.000 GPU 0
[23:12:50] Accepted 39a0caff Diff 0.000/0.000 GPU 0
[23:12:51] Stratum from Pool 0 requested work restart
[23:12:52] Stratum from Pool 0 requested work restart
[23:12:53] Stratum from Pool 0 requested work restart
[23:12:55] Pool 0 extranonce change requested
[23:12:55] Stratum from Pool 0 requested work restart
[23:12:58] Accepted 185949df Diff 0.000/0.000 GPU 0
[23:13:19] Stratum from Pool 0 requested work restart
[23:13:20] Stratum from Pool 0 requested work restart
[23:13:21] Stratum from Pool 0 requested work restart
[23:13:26] Stratum from Pool 0 requested work restart
[23:13:26] Stratum from Pool 0 requested work restart
Edit: This is the win32 build of sph-sgminer.