I think some of you have already found out that bug, but for those that dont know i say where it can be found.
This bug is simple - near cursed abbey and farmlands there is empty house (North West from them ) - abbadoned long ago - there can be found 2 rings in a hatch.(the key you need to enter the house is in a haystack near the door to the east )
as you may know there is a bed that is hiding this hatch - of course you can move it..... (to gain acces tot he hatch )but if you can do so... you can also move this bed into you BACKPACK!!!
Moreover this bed weights nothing and you still have the same ammount of room in backpack - the only bad thing is that this bed takes 1/2 of the backpack screen - when you need a rest you dont need from now on to seek for a bed - you just enter youre inventory and click the bed