Had a random lockup that happened (as they always do) just a few seconds before I was going to save. This cost me 45 minutes of work -- boo! Frantic googling ensued, and I found out about the document recovery feature -- yeah! All was not lost! In fact, only 5 minutes was lost. However, the feature is not as obvious as it should be. A simple improvement would be to check when EasyEda launches whether there are any recovery files with dates newer than the saved versions on the server. If so, pop up an alert that points the user to the recovery feature. Given that stress can suppress the immune system, these days you could be helping save lives! :)