wmic locks in psexec

I am running psexec (sysinternals) from a win2000server to some winxp pro
sp3 (or win2000pro sp4) starting from "cmd"

when in this "remote commandline" i run some commands they freeze up this
commandline.

one of this is WMIC , either if initializing or if updating "mof" data.

maybe there are some problems with stdio ?

i have the same problem using "copy con" after the "ctrl-z" closing.

....