@Badajoz: when the application hangs on my machine, the application’s main (and sole) process gets suspended (at least according to processexplorer). After some ~20 seconds, a parallel process is started (windows trouble reporting stuff). This process is spawned in cases where other processes become irresponsive (they do not have to crash). If you run process explorer in parallel to train fever, and investigate the process list closely, you will probably see what I describe. Terminating the parallel trouble shooting process and resuming train fever’s main process and then bringing back train fever to foreground fixed the described issue for me most of the time.