here is valid hash
note the zombies the hub was only able to run 7 sticks see second screen shots I still get drop outs
I'm still more inclined to wonder about hardware than software, unless there is some difference between our win7 setups.
Do you have something else to test on- a raspi, a mac, or linux box? You've already used this same powered hub for large numbers of stickminers before, right?
If you run it with --debug and create a log file I can look at it some more. Example:
cgminer.exe -o stratum+tcp://stratum.mining.eligius.st:3334 -u 1BURGERAXHH6Yi6LRybRJK7ybEm5m5HwTr --compac-freq 150 --debug 2>logfile.txt
Just run a few minutes or the file will get pretty big, so log long enough to see some failures, then kill it and you can send me the file.
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novak