Just had a look at one of these LG (Aka Xnote) babies down at my local Harvey Norman store here in Oz they had both the LS 50-3 and LS 50-4. Only the LS3 was turned on so i couldn't get a look at the LS4 SXGA screen but the LS3 looked pretty good. Both models are identical in physical appearance and are very light and thin. So here is the low down.
Good
Light, thin, apparently good battery life, feels good.
Bad
Screen looked a bit frosty (but this could have been because of the display settings?)
Placement of ports, (usb ports are on the left side, and at the front also parallel port is on the left side in the middle, cardbus on right at front) Just seems weird to have these ports in these places as, for me i think it would be very annoying. Personal preference i suppose. I think the reason for this may have something to do with the battery as part of the battery takes up most of the back pannel. S-Video is the only port on the back i think.
Ok well thats it for now, if i think of anything else in the mean time, i'll update.
This laptop is still on my "to buy" list so nothing overly bad found out about the lg laptops so far. LM 50 - 2 seems the best value for money atm.
Hope this helps for interested people.