Hi Jose, If you've been using the LyX-Outline branch, you may want to update to the most recent version. It's been a little over a week since I've merge LyX trunk. (I've been trying to fix a problem related to tabbing to the next entry in the expanded outline view.)
I merged the source again this morning. It incorporates a lot of bugfixes that may have been specific to your problems. (In addition to fixing a small memory leak that I found with the Corkboard.) Might be worth a try to see if it speeds up LyX for you. Cheers, Rob
