Thanks John! Don't know what you did but it helps with the cursor flickering.
I am still wondering about the following. If I select all cells in a 5x5 table with the mouse I still get (after applying your patch) f.e.: 0.00 0.17 0.00 199282 0.00 0.00 LyXTabular::column_of_cell(int) const 0.00 0.17 0.00 161499 0.00 0.00 LyXTabular::row_of_cell(int) const In a 50x50 table this becomes: 4.58 1.07 0.12 7329091 0.02 0.02 LyXTabular::column_of_cell(int) const 6.49 0.82 0.17 5793600 0.03 0.03 LyXTabular::row_of_cell(int) const Are these normal numbers (I mean the 199282 and 7329091 function calls)? It seems a bit high. Ed.