[improvement] First time load, please show progress bar or "loading..."

[interruptme]

The first time I loaded the application I had to wait about a minute with a black screen. I did not know if the application was working correctly. It would have been nicer to have some sort of "loading...", hourglass or similar status message that lets me know that the app is doing something, but I just have to wait

[eskerda]

Don't know why that happens. It's true, but usually only the first time.

While a loading screen is nice, maybe seeing what takes so long would be nice too.

Overall, I think there's too much synchronized code that blocks the UI.