Craig Johnson
Novell Support Connection SysOp
Tid 10098064 gives some older information on stopping the client
update. On my 2.04 system, going into the client update portion
mentioned in that tid gives me the ability to enable auto-update (on by
default), and to specify a minimum version and date of the client. I
think in your case simply unchecking the auto-update option would
accomplish your goal.
Personally, I'd just let them update automatically, unless you're
dealing with locked-down PC's that would have an issue with it.