To completely eliminate keyboard layout switching issues in rdesktop:
1. In Linux, set the keyboard layout switch shortcut to Alt+Shift.
2. Modify the contents of the files for Ubuntu /usr/share/rdesktop/keymaps/ru and /usr/share/rdesktop/keymaps/en-us, and for KDE-based openSUSE, as follows:
include common map 0x419 grave 0x29 asciitilde 0x29 shift asciicircum 0x07 shift backslash 0x2b bar 0x2b shift apostrophe 0x28 greater 0x34 shift less 0x33 shift
3. Connect using the following command: rdesktop -5 192.168.x.xxx -u user -a 16 -f -k en-us