Rebol Tcp/udp differences between Linux and Windows

Hi: I'm playing around with the same scripts on both Windows and Linux. (I develop on Linux, and send out the scripts for people to look at under Windows) I've noticed a confusing difference between the two: basically, a simple script works as I expect under Windows, but doesn't under Linux. On Linux I get the "rotating, flashing R logo" in the lower right corner of the main view of the netproblem.r window. On Windows I don't. I'm not quite sure why I'm seeing the R logo at all. Can someone help explain this behavior ? I obviously don't want that R logo there :-) Thanks, Andy Here's the netproblem.r script, and the "simulated remote" script which I use to test things. ----- REBOL [ ] menu_key: func [input_line] [ print ["input line: " input_line] either (stat = none) [ main/offset: 0x0 stat: "view" view main ] [ if(input_line = "attention")[ print "attention!" stat: none unview main ] ] ] main: layout/offset [ size 400x200 backcolor blue style btn button font [colors: [254.254.254] ] across pad 0 return at 20x100 btn 40x20 "Quit" with [effect: [1x0 tab ]] font [colors: [100.100.100]] [ close fp quit ] at 20x140 btn 40x20 "Halt" with [effect: [1x0 tab ]] font [colors: [100.100.100]] [ halt ] ] 0x0 fp: open/lines udp://:5239 fp/awake: func [fp] [ print "awake" command: to-string copy fp command_block: parse command " " user: command_block/1 menu_key command_block/2 true ] insert tail system/ports/wait-list fp ; add my port to the system wait queue print "ready" stat: none forever [ wait none ] close fp ---------------- Remote control ----------------- REBOL [ ] e: func [t] [ either error? try [ fp: open/write udp://localhost:5239 ][ err: "No Listener on port" ] [ insert fp rejoin [ "guest " t ] close fp ] ] std_size: 80x30 panel: layout [ backcolor gray origin 0x00 space 1x1 pad 0x10 size 400x280 across tabs 40 style button button with [ effect: [oval ] mycommand: none ] [ e face/mycommand ] button std_size "Menu" with [ mycommand: "attention" ] tab tab button std_size "Up" with [ mycommand: "cursor-up" ] tab tab button std_size "Power" with [ mycommand: "power" ] return button std_size "Zap left" with [ mycommand: "zap-left" ] button std_size "Left" with [ mycommand: "cursor-left" ] button std_size "Select" with [ mycommand: "select" ] button std_size "Right" with [ mycommand: "cursor-right" ] button std_size "Zap right" with [ mycommand: "zap-right" ] return tab button std_size "Record" with [ mycommand: "record" ] tab button std_size "Down" with [ mycommand: "cursor-down" ] tab button std_size "Stop" with [ mycommand: "stop" ] return pad 0x10 button std_size "Vol +" with [ mycommand: "volume-up" ] tab tab tab tab tab tab button std_size "Channel +" with [ mycommand: "channel-up" ] return button std_size "Vol -" with [ mycommand: "volume-down" ] tab button 50x30 "1" with [ mycommand: "1" ] button 50x30 "2" with [ mycommand: "2" ] button 50x30 "3" with [ mycommand: "3" ] tab tab button std_size "Channel -" with [ mycommand: "channel-down" ] return button std_size "Mute" with [ mycommand: "mute" ] pad 40x0 button 50x30 "4" with [ mycommand: "4" ] button 50x30 "5" with [ mycommand: "5" ] button 50x30 "6" with [ mycommand: "6" ] tab tab button std_size "Info" with [ mycommand: "information" ] return pad 120x0 button 50x30 "7" with [ mycommand: "7" ] button 50x30 "8" with [ mycommand: "8" ] button 50x30 "9" with [ mycommand: "9" ] return pad 120x0 button 50x30 "0" with [ mycommand: "0" ] button 50x30 "*" with [ mycommand: "star" ] button 50x30 "#" with [ mycommand: "pound" ] tab tab button std_size "Cancel" with [ mycommand: "cancel" ] ] view/title panel "Remote Control"