Description of problem: After upgrade GNU screen to version screen.i686 0:4.1.0-0.14.20120314git3c2946.fc18 , all russian symbols are replaced with questions marks. Downgrade to version screen.i686 0:4.1.0-0.12.20120314git3c2946.fc18 solved the problem. This bug works while running screen both XTerm and lxterminal. Version-Release number of selected component (if applicable): On my computer there is no bug visible in screen.i686 0:4.1.0-0.12.20120314git3c2946.fc18 and there is one in screen.i686 0:4.1.0-0.14.20120314git3c2946.fc18. How reproducible: Upgrading back to screen.i686 0:4.1.0-0.14.20120314git3c2946.fc18 unsolves the bug again.
I found a solution by myself. After upgrading screen to version 4.1.0-0.14.20120314git3c2946.fc18 i have quit all my active screen sessions and opened new screen again. All characters are now shown as normal. The solution is: do screen -wipe to erase sockdir and re-open all screens again. I think, that there is no error in screen itself. Sessions files, created by previous versions of screen could work not well with new version of screen.