Network connection lost upon screen remote detach

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http://stackoverflow.com – I'm using secureCRT to ssh to Linux based server. I use "screen" command to keep my sessions alive. But things are becoming strange when I using two PC, OK, here's the scene: On PC-A, start a new screen session named "test"; On PC-B, type screen -D -r test Hopefully, I'd like to see the 'test' session detached on PC-A, and re-attached to PC-B. That works, but when PC-A got remotely detached by PC-B, PC-A lost its connection to server. Just reconnect will be okay, sure, but I'm still want to know why PC-A lost its connection. Here's the command log of PC-A [@PC-A ~]$ screen [re (HowTos)