[K12OSN] XFree86 4.3

[norbert]

HI,

After upgrading my K12ltsp from 4.0.1 to 4.1.1 some client machines 
started to display an error message saying that there was a problem with 
XFee86 V4.3.
I upgraded the server to XFree86 4.4 but the clients are still getting 
V4.3, how or what do I change so that the clients use 4.4

thanks for the help

norbert