Lo ver 4.4.3.2 Calc under Ubuntu 14.04. I entered "= up arrow" in a cell so the above cell equals the current cell. I have been using this sheet for > 5 years. I use this formula in each years sheet 72 times, this is the first error.
I was able to duplicate it 3 times. The first 2 times I lost the copying and deleting 2 2 groups of cells, about 10 cell data entries. The third time, my laziness kicked in so I started saving each step of the way.
I did the "= up arrow" twice in 1 column and when I tried it on the second column (as before, it crashed) In this case, LO went away and I got an "Ubuntu Sorry, I crashed" message, so it might be an Ubuntu thing or an LO call to Ubuntu.
Each time it was recovered by LO, it took about 20 seconds. The sheet is about 450 lines long, about 4 pages, with links between the pages, but this has never happened before.
John