Note - upgraded my work desktop to Wheezy today and am experiencing same bug. So definitely introduced in upgrade from Squeeze to Wheezy.
My workaround at home was write a script to use rdesktop instead of Remmina. You can also mitigate the effect by forcing Remmina to connect to the console when it won't kill all your work in progress if you disconnect. -- To UNSUBSCRIBE, email to debian-bugs-rc-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
