Okay I fixed the script error that was causing that continuous "disconnect" message to pop up, so just remove your current USB LAN package and re-install, should take care of it. Under normal circumstances it was not a problem, but when the tablet and USB devices get into a fight with each other then they keep toggling on/off which causes the disconnect message to continously come up; I've put some lock files in place so that it should only appear once, but it may not be perfect since I can't reproduce the problems you guys are having (lack of the hardware you're using), but hopefully it will take care of at least that little annoyance.
I've also updated the paths for udhcpc so that it should work when you call the scripts manually.

Give it another go guys and let me know.

Thanks,
-Rob