That's exactly what I thought until last night. I've beta tested, and had ANRB running 24x7 for days. However, I found this morning that ANRB had white-screened, not responding, CPU and threads were down to zero. Failure happened at 4:40am this morning - that's when the recording file stopped being written to.
So, it's still not perfect, I just hope Airnav can get to the bottom of what's causing these lockups. Airnav Support, if there's anything I can provide to help diagnose this problem, let me know.