Well I'm not too experienced myself, but I'd say "peeing" before printing is normal with PLA - in fact, if it isn't oozing, I'd say your temperature is too low, and thats why you've got such a sparse print on #1. If you can spare a few dollars, get a multimeter with a thermocouple probe (about $30 here in Australia), and hold it directly in the flow of the PLA coming out of the nozzle while extruding manually and see what is - I set my program temp to 210 to get 190 at the nozzle.
I don't know about the other problems - maybe a communications problem - what baud rate are you using? Also maybe try Slic3r - its not based on Skeinforge so gives different results - I've noticed Slic3r produces smaller gcode - e.g. fewer decimal places and no Z moves when there are none etc.
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Daid 306
Oho... I see the silver PLA. Which seems to vary in thickness a lot. That might be your problem causer.
I suggest to print slow, at a high enough temperature (230C). This might help against jams and stuff. But still, with varying thickness you will have problems. Especially on those kinds of prints. Try an octopus or yoda to see if that turns out better. Organic shapes are a bit easier.
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