ASTECX4.10とRH9.0の組み合わせで使えている人いますか?
rexecで接続しても、
    X Error of failed request: BadRequest (invalid request code or no such operation)
     Major opcode of failed request: 0 ()
     Serial number of failed request: 5
     Current serial number in output stream: 3
と言われ、再度挑戦すると
rexec: Trying to connect XXXX ...
rexec: Executing '/usr/X11R6/bin/rxvt -display 192.168.0.129:0.0' on XXXX ...
XIO: fatal IO error 104 (Connection reset by peer) on X server "192.168.0.129:0.0"
after 0 requests (0 known processed) with 0 events remaining.
ってなっちゃうんですけど・・・・

あっ、ちなみにASTECXはXP-SP1で動かしてます。