One of my family has recently received the Hi10 and the official Docking Keyboard. I have seen a similar display issue (i.e.lines/”Artifacts” on part of the screen) occur sometimes (but not always) when the Hi10 is docked in the keyboard and waken from sleep mode. I found if you undock the tablet from the keyboard the screen display returns to normal and you can re-dock the tablet to the keyboard ok. Note I haven’t yet seen the display issue with the tablet waking from sleep if not docked. Also note hibernation/fast boot has been disabled on the tablet.
In regards to WiFi – We have had no issues with disconnections so far.