Ok, got to play with this today. The altitude bug isn't totally fixed. Apparantly I was at 4 billion feet altitude at some point. I know I live on a hill, but it's not that high

And I thought I was dealing with altitude as a signed integer all the way by now. I don't really have a way to test it because the lowest point around here is several hundred feet above sealevel.

Preloading the list of routes at startup would solve the pause when we go into the 'select a route' menu, but I don't see what the use would be when the current stat (actually opendir) is left in place. As soon as we call stat or opendir, the process is stalled until the disk is spun up, it doesn't matter if we use or discard the result.