No I must say, it's unstable under linux too, not only win7. My server side is with automatic updates switched on and I see multiple times in week a notifications about that. Sometimes it will suggest me to reboot my computer to update but I will not do it before weekend - somewhere in the saturday evening but not at every week. My linux client side is with automatic updates turned off and I will update it manually at friday afternoon (if I remember to do it and if I have a time to do it) before turning off for the weekend. So it is very hard to tell which updates and at which side was a cause of the problems. Windows client is updated very rarely. But somewhere at last two weeks I started to see problems connecting to suspended x2go sessions. After then I updated also windows client but no better stability. If I connect from linux client it will disconnect me after I try to connect to my suspended session (for a moment I can see my desktop and sometimes I can click something and run a command or two). Every time I see my suspended session (with ID number) so I will assume my login was correct. After few retries (number of times differ from day to day) I will get a connection and it is stable until evening then I disconnect it before going home. At home I will connect from windows client and also there is login correct because I see my suspended session with ID number (sometimes it is not 50 but over that but this is a same until I must make a new session). If I try to resume this session I will sometimes see my desktop for a few seconds (and sometimes I can click and run a command or two) but it will disconnect me again saying something about my incorrect credentials. After few retries I will get my session and this is stable until i disconnect it later. PyHoca-GUI is more stable and with this I can reconnect better. I have'nt used windows x2go-client for a last week or two anymore. But there are also cases there after a few unsuccessfull reconnections PyHoca-GUI will not show my suspended session anymore and I must start a new one. And there is a new session at the server - the old one is gone with all related programs closed.