$ Xorg -version

X Window System Version 7.1.1
Release Date: 12 May 2006
X Protocol Version 11, Revision 0, Release 7.1.1
Build Operating System: UNKNOWN
Current Operating System: Linux elisregina 2.6.18-4-686 #1 SMP Wed May 9 23:03:12 UTC 2007 i686
Build Date: 04 April 2007