I ve been using screen with vertical split for sometime now. And whenever I move my workspace to a new environment, its a fight to get either a build or a rpm with vertical split.

Recently I moved to centos 6.3 for my workspace usage and used the following rpm for install with glibc < 2.12

ftp://fr2.rpmfind.net/linux/fedora/linux/releases/15/Everything/x86_64/os/Packages/screen-4.1.0-0.3.20101110git066b098.fc15.x86_64.rpm

http://www.rpmfind.net//linux/RPM/fedora/devel/rawhide/x86_64/s/screen-4.1.0-0.15.20120314git3c2946.fc20.x86_64.html