I have been using dosbox for 25 years or so. I use it solely for a dos-based time-keeping program and for the game Blockout (3d tetris). Until now, I've never had trouble. But in the past few months, running Win11, suddenly I'll see that it's no longer running. I'll start it up and it will keep working for hours or days, and then again it won't show as an active program. This happens only with the time-keeping program (although I rarely have it open for Blockout for more than a few minutes, while I keep the time-keeping program running at all times). I can't think of anything that has changed (and I'd been running win11 for quite a while before this started happening). Any thoughts on what might be going on? Thank you.