linux problem

[root@cechit]

hi i a italian boy
i have a problem whit linux mandrake 9.0
when throwing the file with the command: sh / ut2003 demo the computer returns me the following errore:XLIB: EXTENSION "XiG-sundry-nonstandard" missing on dislay "o.o"  
what does it mean?  
how can I resolve?  
thanks  
ps  
in I don't know if this is the correct address to expose my problem and there would be thankful if you addressed me toward the proper forum
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://icculus.org/pipermail/ut2003/attachments/20030302/cf5cd8b7/attachment.htm>