I just updated my rdesktop to 1.8.3 from source ( on Slackware 11 ) and had troubles with arrow keys/page up/page down not working.
I see this on the console:
ERROR: Failed to open keymap en-us
The fix is a permission change. I initially looked at /usr/share/rdesktop/keymaps and everything was fine. Directories were 755 and keymaps were 644.
But the new version of rdesktop was looking at
/usr/local/share/rdesktop/keymaps instead. This new keymap was created with the new rdesktop installation and was only readable by root. Changed perms to 755 for the folder and all we as well again.
Hope this might help someone.
Related to this closed thread: