I'm having hard time right now... while using Windows. And one of problems is using PuTTY. This is great software for Windows world, but extremely unusable for me as Linux user.
Having all the time yakuake terminal running number of sessions, I sometime open ssh-sessions and they never lose connection even if I'm not using them (except internet loss or downtime). So I was expecting same with putty or auto-reconnect feature at least.
In fact there is simple solution, which i get on superuser.com. I just set up keepalive in Connection settings.